Gaya APA

USP 32 : NF 27 the official compendia of standards ( VOL 1 ). (2009). Rockville, MD 20853: The united states pharmacopoeial convention.

Gaya MLA

USP 32 : NF 27 the official compendia of standards ( VOL 1 ). . Rockville, MD 20853: The united states pharmacopoeial convention, 2009. Text.