Cita APA (7a ed.)

Bless, R., Kemmesies, U., & Diemel, S. (2000). Third multi-city study: Drug use trends in European cities in the 1990s. Council of Europe Publishing.

Cita Chicago Style (17a ed.)

Bless, Ruud, Uwe Kemmesies, y Steven Diemel. Third Multi-city Study: Drug Use Trends in European Cities in the 1990s. Strasbourg: Council of Europe Publishing, 2000.

Cita MLA (9a ed.)

Bless, Ruud, et al. Third Multi-city Study: Drug Use Trends in European Cities in the 1990s. Council of Europe Publishing, 2000.