APA (7th ed.) Citation

(2007). Physicians' desk reference for nonprescription drugs, dietary supplements, and herbs (28th ed.). Medical Economics Co. Inc.

Chicago Style (17th ed.) Citation

Physicians' Desk Reference for Nonprescription Drugs, Dietary Supplements, and Herbs. 28th ed. Montvale, NJ: Medical Economics Co. Inc, 2007.

MLA (9th ed.) Citation

Physicians' Desk Reference for Nonprescription Drugs, Dietary Supplements, and Herbs. 28th ed. Medical Economics Co. Inc, 2007.