Cita APA (7th ed.)

O'Brien, R., & Evans, G. (1992). The encyclopedia of drug abuse. Facts on File.

Cita Chicago (17th ed.)

O'Brien, Robert, i Glen Evans. The Encyclopedia of Drug Abuse. New York: Facts on File, 1992.

Cita MLA (9th ed.)

O'Brien, Robert, i Glen Evans. The Encyclopedia of Drug Abuse. Facts on File, 1992.