APA Style

Convention, U, S, P. (1989). USP XXII. NF XVII: The United States Pharmacopeial: official from January 1. 1990 . : .

MLA Style

Convention, United, States, Pharmacopeial. "USP XXII. NF XVII: The United States Pharmacopeial: official from January 1. 1990". : , 1989. Buku.