Gaya APA

convention, T, U, S, P. (2003). The United States Pharmacopeia 27: The National Formulary 22 (22th. ed.). Rockville: The United States Pharmacopeial Convention, Inc.

Gaya MLA

convention, The, United, States, Pharmacopeial. "The United States Pharmacopeia 27: The National Formulary 22". 22th. ed. Rockville: The United States Pharmacopeial Convention, Inc, 2003. Text.