The Purdue OWL site provides guidance for basic citation and paper formatting (APA, MLA, Chicago, AMA, IEEE).

• APA Style Guide 7th Edition  
• MLA Style Guide 8th Edition 
• Chicago Manual of Style 17th Edition 

Citation tools (sometimes called citation managers or reference managers) are programs that help you organize and cite your sources. You can:

• Export citations and articles from databases and the web
• Cite your sources in Word
• Create a bibliography of those sources.

Purdue OWL has created a useful online guide of the APA citation style. This online guide includes descriptions and examples. 

The following video was produced for Hayden Memorial Library; it contains useful information about APA citation style: