Gossop, M., & Grant, M. (1990). Preventing and controlling drug abuse. Word Health Organization.
Cita Chicago (17th ed.)Gossop, M., i M. Grant. Preventing and Controlling Drug Abuse. Word Health Organization, 1990.
Cita MLA (9th ed.)Gossop, M., i M. Grant. Preventing and Controlling Drug Abuse. Word Health Organization, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.