Any and all changes to the content of articles (except spelling) that are not marked with a correct source and footnote will be reverted or deleted. New articles without proper sourcing will also be deleted. For further education on the subject, see Lexicanum: Sourcing.
Save yourself the frustration of having your contribution removed and us a lot of work! In addition not following this rule will result in the removal of the offender from the Lexicanum.