APA (7th ed.) Citation

Weltgesundheitsorganisation & Gossop, M. (1990). Preventing and controlling drug abuse. World Health Organization.

Chicago Style (17th ed.) Citation

Weltgesundheitsorganisation and Michael Gossop. Preventing and Controlling Drug Abuse. Geneva: World Health Organization, 1990.

MLA (8th ed.) Citation

Weltgesundheitsorganisation and Michael Gossop. Preventing and Controlling Drug Abuse. World Health Organization, 1990.