Gaya APA

Convention, U, S, P. (2005). USP 28 NF 23 Volume II ; The official Compendia Of Standards . Kanada: USP Phamacopedia.

Gaya MLA

Convention, United, States, Pharmacopeial. "USP 28 NF 23 Volume II ; The official Compendia Of Standards". Kanada: USP Phamacopedia, 2005. Text.