• The OWL at Purdue website has a wealth of resources about APA, MLA, and Chicago styles of citation, as well as other information about assignment types and writing strategies.

https://owl.english.purdue.edu/owl/section/2/

• Leeds University Library provides an exhaustive list of sample bibliography entries for different citation systems, including Harvard, APA and numeric.

http://library.leeds.ac.uk/skills-referencing

• Citethisforme.com is a free online citation tool and bibliography builder that works with Harvard, APA, and MLA.

https://www.citethisforme.com/

• Bibme.org is a free online citation tool and bibliography builder that works with APA, MLA, Chicago, and Turabian. Sign-in required.

http://www.bibme.org/

• Zotero is a research tool that allows you to add sources by clicking on them. Downloadable desktop and online tool.

https://www.zotero.org