APA (7th ed.) Citation

USA, Drug Enforcement Administration, Hoover, R. D., & USA Drug Enforcement Administration. (1985). Drugs of Abuse. U.S. GPO.

Chicago Style (17th ed.) Citation

USA, Drug Enforcement Administration, R. D. Hoover, and USA Drug Enforcement Administration. Drugs of Abuse. Washington, D.C: U.S. GPO, 1985.

MLA (8th ed.) Citation

USA, Drug Enforcement Administration, et al. Drugs of Abuse. U.S. GPO, 1985.