If you are looking for the print version of the Diagnostic and Statistical Manual of Mental Disorders: DSM-IV, you can find the call number, status, and other information in the catalog record at http://merlin.lib.umsystem.edu/record=b2531305~S1

Diagnostic and Statistical Manual of Mental Disorders: DSM-V is available online at http://proxy.mul.missouri.edu/login?url=http://dsm.psychiatryonline.org/book.aspx?bookid=556