APA Style

Spitzer, R., Williams, J. (1987). Diagnostic and Statistical Manual of Mental Disorders (DSM-III-R) (3rd.ed). Washington: American Psychiatric Assoc..

MLA Style

Spitzer, Robert., Williams, Janet. "Diagnostic and Statistical Manual of Mental Disorders (DSM-III-R)". 3rd.ed Washington: American Psychiatric Assoc., 1987. print.