APA (7th ed.) Citation

United States Pharmacopeial Convention. (1984). The United States pharmacopeia: Twenty-first revision, official from January 1, 1985. United States Pharmacopeial Convention, Inc..

Chicago Style (17th ed.) Citation

United States Pharmacopeial Convention. The United States Pharmacopeia: Twenty-first Revision, Official from January 1, 1985. Rockville, Md.: United States Pharmacopeial Convention, Inc., 1984.

MLA (9th ed.) Citation

United States Pharmacopeial Convention. The United States Pharmacopeia: Twenty-first Revision, Official from January 1, 1985. United States Pharmacopeial Convention, Inc., 1984.