For an overview about when to use citations to credit others for their work ... versus plagiarizing ... see our page on Plagiarism.
For additional information about tools to help you capture citations, text, data, and other media see our Citation and Document Management page.
Use for chemistry
Use for biological sciences.
Use for nursing and the social sciences.
Use for literature, the arts, and the humanities
Subject-specific writing guidelines are found at OWL: Subject-Specific Resources.