There are many different styles for formatting references and various publications have different requirements for references. You can find manuals of style in the library in the Reference area on the second floor in the WZ 345 section. Online you can consult:
Citation Managers are programs that help you collect, organize, share, and cite sources.
Here are the citation manager programs that have guides:
Formats single references:
Nice for grabbing a quickly formatted citation for one time use