Bless, R., Kemmesies, U., & Diemel, S. (2000). Third multi-city study: Drug use trends in European cities in the 1990s. Council of Europe Publishing.
Chicago-Zitierstil (17. Ausg.)Bless, Ruud, Uwe Kemmesies, und Steven Diemel. Third Multi-city Study: Drug Use Trends in European Cities in the 1990s. Strasbourg: Council of Europe Publishing, 2000.
MLA-Zitierstil (9. Ausg.)Bless, Ruud, et al. Third Multi-city Study: Drug Use Trends in European Cities in the 1990s. Council of Europe Publishing, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.