Cita APA (7a ed.)

Weltgesundheitsorganisation. (1988). The world drug situation. World Health Organization.

Cita Chicago Style (17a ed.)

Weltgesundheitsorganisation. The World Drug Situation. Geneva: World Health Organization, 1988.

Cita MLA (8a ed.)

Weltgesundheitsorganisation. The World Drug Situation. World Health Organization, 1988.