Smith, P. H. (1992). Drug policy in the Americas. Westview Press.
Lua i Stíl Chicago (17ú heag.)Smith, Peter H. Drug Policy in the Americas. Boulder: Westview Press, 1992.
Lua MLA (8ú heag.)Smith, Peter H. Drug Policy in the Americas. Westview Press, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.