Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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