Avis, H. (1993). Drugs & life (2nd ed.). Brown & Benchmark.
Cita Chicago (17th ed.)Avis, Harry. Drugs & Life. 2nd ed. Madison, Wis.: Brown & Benchmark, 1993.
Cita MLA (8th ed.)Avis, Harry. Drugs & Life. 2nd ed. Brown & Benchmark, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.