Rocha-Silva, L. (1998). The nature and extent of drug use and the prevalence of related problems in South Africa: National surveillance. HSRC Publ.
Chicago-Zitierstil (17. Ausg.)Rocha-Silva, Lee. The Nature and Extent of Drug Use and the Prevalence of Related Problems in South Africa: National Surveillance. Pretoria: HSRC Publ, 1998.
MLA-Zitierstil (8. Ausg.)Rocha-Silva, Lee. The Nature and Extent of Drug Use and the Prevalence of Related Problems in South Africa: National Surveillance. HSRC Publ, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.