Gaya APA

Convention, U, S, P. (2013). The United States Pharmacopeia 36 = National Formulary 31, Vol.2 . Rockville: United State Pharmacopeial Convention.

Gaya MLA

Convention, United, State, Pharmacopeial. "The United States Pharmacopeia 36 = National Formulary 31, Vol.2". Rockville: United State Pharmacopeial Convention, 2013. Text.