Decide which citation style to use based on: what style is most-used in the discipline for which you are writing and what style is recommended or required by your instructor.
And whatever style you choose, BE CONSISTENT!
There are several citation management systems that can help you work more efficiently by saving your citations and automatically formatting your papers: Zotero, EndNote, RefWorks, BibTex, RefMan, EasyBib, ProCite and many others. Zotero includes a Firefox browser extension that automatically pulls the information you need.
For more information about Zotero, visit the research guide (below) and look for upcoming workshops:
Using a citation generator is an easy way to create citations in proper format. It is a type of online tool that creates bibliographic and in-text citations for you. Here are a couple that use the most common citation styles, like APA, Chicago, and MLA.
Not all citation builders are always correct. Some are slow to adopt changes from style guide updates, may have a programming error, or may include entries that are mistyped. Students should always double check their auto-generated citations for correctness.
Be sure to check with your instructor to make sure you are using the apporpriate citation system and edition of that system.
Students are finding sources for their research from document versions on electronic readers like iPads and Kindle Fires. The citation styles are keeping up with this trend! Here are some links to e-reader citation formats. (as of early 2012)