United States Pharmacopeial Convention. (2001). USP DI. Advice for the patient: Drug information in lay language (21. ed.). MICROMEDEX.
Chicago Style (17th ed.) CitationUnited States Pharmacopeial Convention. USP DI. Advice for the Patient: Drug Information in Lay Language. 21. ed. Englewood Cliff [N.J.]: MICROMEDEX, 2001.
MLA (9th ed.) CitationUnited States Pharmacopeial Convention. USP DI. Advice for the Patient: Drug Information in Lay Language. 21. ed. MICROMEDEX, 2001.