Most books on biology have call numbers that start with Q, located on the upper level.
In a library database
In one of these organism databases
If you need a book or article that PSU does not have you can request the article through Interlibrary Loan.
This service is free to all PSU students, faculty, and staff.
http://library.plymouth.edu/noodletoolsNoodleTools can help you create, manage, and save citations in a variety of citation styles.
Below are links to the style manuals for some other common citation styles.
The Purdue OWL has great information on APA, MLA, and Chicago.