Gaya APA

Convention, U, S, P. (2004). US. Pharmacopeia 27 National Formulary 22 (Edisi 27 jilid 1,2,3). Washington: United States Pharmacopeial Convention.

Gaya MLA

Convention, United, States, Pharmacopeial. "US. Pharmacopeia 27 National Formulary 22". Edisi 27 jilid 1,2,3 Washington: United States Pharmacopeial Convention, 2004. Text.