So you're writing a paper/grant/very important document and you need to know how to cite a particular reference. If you're using a citation management tool like RefWorks, you can use the Preview Output Style to help you format a number of reference styles. Book sections, conference proceedings, journal articles, and items that aren't easily categorized are all covered.
Another great reference for citing in APA and MLA format is the Purdue Online Writing Lab. This resource created at Purdue University provides guidance on the correct formatting of references and the structuring of an academic paper from start to finish. It's a resource worth bookmarking.
Finally, did you know you can cite a tweet? As always, you should judge whether this is an appropriate reference for you to include in your work. If so, te Modern Language Association has created a standard format for appropriately citing tweets in academic papers with the idea that some information is most rapidly disseminated through Twitter before hitting other major news sources. The Atlantic has an article outlining the format -- take a look!
Contact us if we can help you with any citation questions and happy citing!