Europe Monitoring Centre for Drugs and Drug Addiction. (2001). Guidelines for the evaluation of outreach work: A manual for outreach practitioners. Office for Official Publications of the European Communities.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Europe Monitoring Centre for Drugs and Drug Addiction. Guidelines for the Evaluation of Outreach Work: A Manual for Outreach Practitioners. Luxembourg: Office for Official Publications of the European Communities, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Europe Monitoring Centre for Drugs and Drug Addiction. Guidelines for the Evaluation of Outreach Work: A Manual for Outreach Practitioners. Office for Official Publications of the European Communities, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.