APA
(1993). <The> PDR family guide to prescription drugs. New Jersey: Medical Economics Data.
Chicago
1993. <The> PDR family guide to prescription drugs. New Jersey: Medical Economics Data.
Harvard
(1993). <The> PDR family guide to prescription drugs. New Jersey: Medical Economics Data.
MLA
<The> PDR family guide to prescription drugs. New Jersey: Medical Economics Data. 1993.