Citace podle APA (7th ed.)
GARTGERS, C., & ET AL. (1991). CHANGES OVER TIME IN HEROIN AND COCAINE USE AMONG INJECTING DRUG USERS IN AMSTERDAM, THE NETHERLANDS, 1985-1989.
Citace podle Chicago (17th ed.)
GARTGERS, C., a ET AL. CHANGES OVER TIME IN HEROIN AND COCAINE USE AMONG INJECTING DRUG USERS IN AMSTERDAM, THE NETHERLANDS, 1985-1989. 1991.
Citace podle MLA (9th ed.)
GARTGERS, C., a ET AL. CHANGES OVER TIME IN HEROIN AND COCAINE USE AMONG INJECTING DRUG USERS IN AMSTERDAM, THE NETHERLANDS, 1985-1989. 1991.
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