APA Citation

(1982). The United States Pharmacopeia: Twentieth revision. Rockville, Md.: United States Pharmacopeial Convention.

Chicago Style Citation

The United States Pharmacopeia: Twentieth Revision. Rockville, Md.: United States Pharmacopeial Convention, 1982.

MLA Citation

The United States Pharmacopeia: Twentieth Revision. Rockville, Md.: United States Pharmacopeial Convention, 1982.

Warning: These citations may not always be 100% accurate.