Perkinson, R. R. (1997). Chemical dependency counseling: A practical guide. Sage Publications.
Chicago Style aipamenaPerkinson, Robert R. Chemical Dependency Counseling: A Practical Guide. Thousand Oaks, Calif: Sage Publications, 1997.
MLA aipamenaPerkinson, Robert R. Chemical Dependency Counseling: A Practical Guide. Sage Publications, 1997.
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