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Green Day Wiki:Citing sources
Citing sources is important on Green Day Wiki so that the editor can verify the facts that they included on an article. If an article contains a fact that may be true but a source for the fact has not been found, append the {{Citation needed}} after the sentence(s) with the fact.
Take note that when you, the editor, find a source for a sentence, make sure it is from a reliable source. For example, ordinary fansites and blogs are not reliable sources but big websites such as greendayauthority.com, repriserecords.com, and wmg.jp can generally be considered reliable sources. Primary sources such as album liner notes or interviews from the band are the best sources you can use.