Readers must be able to check that any of the information within Wikipedia articles is not just made up. This means all material must be attributable to reliable, published sources. Additionally, quotations and any material challenged or likely to be challenged must be supported by inline citations.
Wikipedia articles cover notable topics—those that have gained sufficiently significant attention by the world at large and over a period of time, and are not outside the scope of Wikipedia. We consider evidence from reliable and independent sources to gauge this attention. The notability guideline does not determine the content of articles, but only whether the topic should have its own article.
A citation, also called a reference, uniquely identifies a source of information. Wikipedia's verifiability policy requires inline citations for any material challenged or likely to be challenged, and for all quotations, anywhere in article space.
Wikipedia is an online encyclopedia and, as a means to that end, an online community of individuals interested in building and using a high-quality encyclopedia in a spirit of mutual respect. Therefore, there are certain things that Wikipedia is not.