Gaya APA

Convention, U, S, P. (1997). USP DI 1997: Drug Information for The Health Care Professional (17th.ed). Rockville: The United States Pharmacopeial Convention.

Gaya MLA

Convention, United, States, Pharmacopeial. "USP DI 1997: Drug Information for The Health Care Professional". 17th.ed Rockville: The United States Pharmacopeial Convention, 1997. Text.