APA-viite (7. p.)
WOLFF, K., & ET AL. (1996). NON-PRESCRIBED DRUG USE DURING METHADONE TREATMENT BY CLINIC -AND COMMUNITY BASED PATIENTS.
Chicago-viite (17. p.)
WOLFF, K., ja ET AL. NON-PRESCRIBED DRUG USE DURING METHADONE TREATMENT BY CLINIC -AND COMMUNITY BASED PATIENTS. 1996.
MLA-viite (9. p.)
WOLFF, K., ja ET AL. NON-PRESCRIBED DRUG USE DURING METHADONE TREATMENT BY CLINIC -AND COMMUNITY BASED PATIENTS. 1996.
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