APA

World Congress of Psychiatry (6th. : 1977 aug. 28 s. 3. . H. H., . (1978). The international callenge of drug abuse. Rockville: National Institute on Drug Abuse.

Chicago

World Congress of Psychiatry (6th. : 1977 aug. 28 sep 3 Honululu Hawaii), . 1978. The international callenge of drug abuse. Rockville: National Institute on Drug Abuse.

Harvard

World Congress of Psychiatry (6th. : 1977 aug. 28 s. 3. . H. H., . (1978). The international callenge of drug abuse. Rockville: National Institute on Drug Abuse.

MLA

World Congress of Psychiatry (6th. : 1977 aug. 28 sep 3 Honululu Hawaii), . The international callenge of drug abuse. Rockville: National Institute on Drug Abuse. 1978.