APA (7th ed.) Citation

United States Pharmacopeial Convention. (1989). USP DI. United States Pharmacopeial Convention.

Chicago Style (17th ed.) Citation

United States Pharmacopeial Convention. USP DI. Rockville, Md.: United States Pharmacopeial Convention, 1989.

MLA (9th ed.) Citation

United States Pharmacopeial Convention. USP DI. United States Pharmacopeial Convention, 1989.

Warning: These citations may not always be 100% accurate.