Just about everyone uses social media in some capacity these days. In many cases, using social media content in an academic assignment is not an option. If you are allowed to use it, though, you need to know how to cite it. Aditi Rao, a Technology Coach in Texas, has compiled MLA and APA citation guidelines for some popular social media sites into one handy chart.
As always, refer to the appropriate style manual for exact details. You may also visit the Reference Department or the Writing Center in the Brown Library building for citation assistance.