APA
(1981). United States pharmacopeia dispensing information. United States Pharmacopeial Convention, Inc., Maryland: .
Chicago
1981. United States pharmacopeia dispensing information. United States Pharmacopeial Convention, Inc., Maryland: .
Harvard
(1981). United States pharmacopeia dispensing information. United States Pharmacopeial Convention, Inc., Maryland: .
MLA
United States pharmacopeia dispensing information. United States Pharmacopeial Convention, Inc., Maryland: . 1981.