All print books on religion are located from the BL to BX sections on the 4th floor of the library.
See this link for how they are organized: http://www.loc.gov/aba/cataloging/classification/lcco/lcco_b.pdf.
If you're looking for books we don't have, please submit a request for them via Interlibrary Loan (ILL) well in advance of your assignment. Via ILL, we will borrow the material(s) from another library for you but it will take some time to be delivered. The ILL request page is available under the library's home page by clicking "Quick Links".