Gaya APA

convention, T, U, S, P. (1999). The United States Pharmacopeia 24: The National Formulary 19 (19th. ed.). Rockville: The United States Pharmacopeial Convention, Inc.

Gaya MLA

convention, The, United, States, Pharmacopeial. "The United States Pharmacopeia 24: The National Formulary 19". 19th. ed. Rockville: The United States Pharmacopeial Convention, Inc, 1999. Text.