The latest editions of all the major style manuals are in the reference section of the Nielsen Library, directly behind the reference desk on the second floor.
You can also check out the Purdue Owl for citation guides that instruct you on numerous styles, such as citing electronic sources in APA.
Many platforms, such as EBSCO, have a citation function that you can use. Be careful when using these! These citations often need further formatting.
Need someone to check over your citations? Visit the Writing Studio in McDaniel Hall 220.