By installing a plugin into your browser and Microsoft Word, these Citation Managers can almost do all your citations for you. Be sure to ask for help if you have difficulties setting things up.
These websites can help you format your paper and citations properly. The list below are style guides available online (mostly through Purdue University's Online Writing Lab (OWL)).
Check your assignment instructions or ask your professor which style to use.
These style manuals are available through the library's database collection.