Di Wikipedia, la nciclupidìa lìbbira.
A soglia d'ammissibilità ppi l'inclusioni nta a Wikipedia eni a Virificabbilità, non a viritati—ciué, si li litturi su nta li cundizzioni di virificari si lu matiriali aggiuntu nta a Wikipedia a statu gghia pubbricatu ri quarchi autra banna di na surgenti attindibbili, no si unu pienza pirsunalmenti ca eni o veru. Li editura avissura a furniri surgenti attindibbili pi quotazzioni a pi quarsiasi matirali ca po siri misu in discussioni o ca putissi ssiri misu in discussni, o lu matiriali putissi ssiri macari luatu.
A Virificabbilità eni lu torsulu di li pulitichi di cundotta Wikipedia.L'autri sunu nenti ricerchi urigginali and Puntu di Vista Niutrali. Jointly, these policies determine the type and quality of material that is acceptable in Wikipedia articles. They should not be interpreted in isolation from one another, and editors should familiarize themselves with all three. To discuss the reliability of particular sources, see the reliable sources noticeboard.
[cancia] Burden of evidence
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- For how to write citations, see Wikipedia:Citing sources
The burden of evidence lies with the editor who adds or restores material. All quotations and any material challenged or likely to be challenged should be attributed to a reliable, published source using an inline citation.[1] The source cited must directly support the information as it is presented in the article.[2] The source should be cited clearly and precisely to enable readers to find the text that supports the article content in question. Editors should cite sources fully, providing as much publication information as possible, including page numbers when citing books.
If no reliable, third-party sources can be found for an article topic, Wikipedia should not have an article on it.
Any material lacking a reliable source may be removed, but editors may object if you remove material without giving them sufficient time to provide references. If you want to request a source for an unsourced statement, consider tagging a sentence by adding the {{fact}} template, a section with {{unreferencedsection}}, or the article with {{refimprove}} or {{unreferenced}}. Alternatively, you may leave a note on the talk page requesting a source, or you may move the material to the talk page.
Do not leave unsourced or poorly sourced information that may damage the reputation of living persons or organizations in articles and do not move it to the talk page (See Wikipedia:Biographies of living persons for details of this policy). As Wikipedia founder Jimmy Wales has put it:
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[cancia] Reliable sources
Articles should rely on reliable, third-party published sources with a reputation for fact-checking and accuracy.[3] Reliable sources are necessary both to substantiate material within articles and to give credit to authors and publishers in order to avoid plagiarism and copyright violations. Sources should directly support the information as it is presented in an article and should be appropriate to the claims made: exceptional claims require high-quality sources.
In general, the most reliable sources are peer-reviewed journals and books published in university presses; usually followed by university-level textbooks; then by magazines, journals, and books published by respected publishing houses; then by mainstream newspapers. Special cases may arise; and editors should be careful not to exclude a point of view merely because it lacks academic credentials. As a rule of thumb, the greater the degree of scrutiny involved in checking facts, analyzing legal issues, and scrutinizing the evidence and arguments of a particular work, the more reliable it is.
Academic and peer-reviewed publications are highly valued and usually the most reliable sources in areas where they are available, such as history, medicine and science. Material from reliable non-academic sources may also be used in these areas, particularly if they are respected mainstream publications. The appropriateness of any source always depends on the context. Where there is disagreement between sources, their views should be clearly attributed in the text.
For a guideline discussing the reliability of particular types of sources, see Wikipedia:Reliable sources (WP:RS). Because policies take precedence over guidelines, in the case of an inconsistency between this page and that one, this page has priority, and WP:RS should be updated accordingly. To discuss the reliability of specific sources, consult the Wikipedia:Reliable sources/Noticeboard.
All articles must adhere to Wikipedia's neutrality policy, fairly representing all majority and significant-minority viewpoints that have been published by reliable sources, in rough proportion to the prominence of each view. Tiny-minority views and fringe theories need not be included, except in articles devoted to them.
[cancia] Self-published sources
Template:Policy shortcut Anyone can create a website or pay to have a book published, then claim to be an expert in a certain field. For that reason, self-published books, newsletters, personal websites, open wikis, blogs, knols, forum postings, and similar sources are largely not acceptable.[4]
Self-published material may, in some circumstances, be acceptable when produced by an established expert on the topic of the article whose work in the relevant field has previously been published by reliable third-party publications. However, caution should be exercised when using such sources: if the information in question is really worth reporting, someone else is likely to have done so. For example, a reliable self-published source on a given subject is likely to have been cited on that subject as authoritative by a reliable source.
Self-published sources should never be used as third-party sources about living persons, even if the author is a well-known professional researcher or writer; see WP:BLP#Reliable sources.
Articles and posts on Wikipedia, or other websites that mirror Wikipedia content, may not be used as sources.
[cancia] Questionable sources
Template:Policy shortcut Questionable sources are those with a poor reputation for fact-checking. Questionable sources include websites and publications that express views that are widely acknowledged as extremist, are promotional in nature, or rely heavily on rumors and personal opinions. Because of this, they can be treated similarly to the way self-published sources are treated. Questionable sources should only be used as sources about themselves as described below. Articles about such sources should not repeat any contentious claims the source has made about third parties, unless those claims have also been published by reliable sources.
[cancia] Self-published and questionable sources about themselves
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Questionable sources, and most self-published sources, may only be used as sources about themselves, and then only if:
- the material used is relevant to the notability of the subject being discussed;
- it is not contentious;
- it is not unduly self-serving;
- it does not involve claims about third parties;
- it does not involve claims about events not directly related to the subject;
- there is no reasonable doubt as to who authored it;
- the article is not based primarily on such sources.
[cancia] Non-English sources
Template:Policy shortcut Because this is the English Wikipedia, for the convenience of our readers, editors should use English-language sources in preference to sources in other languages, assuming the availability of an English-language source of equal quality, so that readers can easily verify that the source material has been used correctly. Where editors use a non-English source to support material that is likely to be challenged, or translate any direct quote, they need to quote the relevant portion of the original text in a footnote or in the article, so readers can check that it agrees with the article content. Translations published by reliable sources are preferred over translations made by Wikipedia editors.
[cancia] Exceptional claims require exceptional sources
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Certain red flags should prompt editors to examine the sources for a given claim:
- surprising or apparently important claims not covered by mainstream sources;
- reports of a statement by someone that seems out of character, embarrassing, controversial, or against an interest they had previously defended;
- claims that are contradicted by the prevailing view within the relevant community, or which would significantly alter mainstream assumptions, especially in science, medicine, history, politics, and biographies of living persons. This is especially true when proponents consider that there is a conspiracy to silence them.
Exceptional claims in Wikipedia require high-quality sources; if such sources are not available, the material should not be included. Also be sure to adhere to other policies, such as the policy for biographies of living persons and the undue weight provision of Wikipedia:Neutral point of view.
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[cancia] Notes and references
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[cancia] Further reading
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