History

This is a smaller, online version of the EndNote software. It not only formats your citations, it can also store your searches for you so that you can access them from the Internet instead of having to keep a separate offline list.

Bluford Library now provides access to the cloud-based RefWorks citation manager for free and not the EndNote desktop version.

This site will prompt you for information about your citation then format it for you.

This site prompts you for the information about a citation and formats it for you. Supports more styles than CitationMachine or BibMe.

"Easy" citation creator, with support for a wide variety of resource types.

This is a good tutorial presented by the American Psychological Association