Sandwijk, J. P., Cohen, P., & Musterd, S. (1991). Licit and illicit drug use in Amsterdam: Report of a household survey in 1990 on the prevalence of drug use among the population of 12 years and over. Onderzoekprogramma Drugbeleid gemeente Amsterdam.
Chicago-Zitierstil (17. Ausg.)Sandwijk, J. P., Peter Cohen, und Sako Musterd. "Licit and Illicit Drug Use in Amsterdam: Report of a Household Survey in 1990 on the Prevalence of Drug Use Among the Population of 12 Years and over." Onderzoekprogramma Drugbeleid Gemeente Amsterdam 1991.
MLA-Zitierstil (8. Ausg.)Sandwijk, J. P., et al. "Licit and Illicit Drug Use in Amsterdam: Report of a Household Survey in 1990 on the Prevalence of Drug Use Among the Population of 12 Years and over." Onderzoekprogramma Drugbeleid Gemeente Amsterdam, 1991.