APA (7th ed.) Citation

Medical Economics Company. (1990). Physicians' desk reference (44th. ed.). Medical Economics Co..

Chicago Style (17th ed.) Citation

Medical Economics Company. Physicians' Desk Reference. 44th. ed. Oradell, N.J.: Medical Economics Co., 1990.

MLA (9th ed.) Citation

Medical Economics Company. Physicians' Desk Reference. 44th. ed. Medical Economics Co., 1990.

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