Cita APA (7a ed.)

Petersen, R. C. (1978). The international challenge of drug abuse. NIDA research monograph.

Cita Chicago Style (17a ed.)

Petersen, Robert C. "The International Challenge of Drug Abuse." NIDA Research Monograph 1978.

Cita MLA (9a ed.)

Petersen, Robert C. "The International Challenge of Drug Abuse." NIDA Research Monograph, 1978.