Wikipedia talk:Attribution/Community discussion/transclusion/Verify

The threshold for inclusion in Wikipedia is verifiability, not truth. "Verifiable" in this context means that any reader should be able to check that material added to Wikipedia has already been published by a reliable source. Editors should provide a reliable source for quotations and for any material that is challenged or is likely to be challenged, or it may be removed.

Wikipedia:Verifiability is one of Wikipedia's core content policies. The others include Wikipedia:No original research and Wikipedia:Neutral point of view. 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 try to familiarize themselves with all three.

Verifiability

Further information and examples: Wikipedia:Citing sources and Wikipedia:Citations quick reference

Any reader should be able to verify that material added to Wikipedia has already been published by a reliable source. Material that is challenged or likely to be challenged, and quotations, should be accompanied by a clear and precise citation, normally written as a footnote, a Harvard reference, or an embedded link; other methods, including a direct description of the source in the article text, are also acceptable.

Any edit lacking attribution may be removed, and the final burden of evidence lies with the editor wishing to add or retain the material. However, this policy should not be used to cause disruption by removing material for which reliable sources could easily or reasonably be found — except in the case of contentious material about living persons, which must be removed immediately. If you encounter a harmless statement that lacks attribution, you can tag it with the {{fact}} template, or move it to the article's talk page with a comment requesting attribution. If the whole article or an entire section is unsourced, you can use the {{unreferenced}} template. Absurd unsourced claims and original research should be deleted rather than tagged or moved to a talk page.