APA (7 वां संस्करण) प्रशस्ति पत्र
European Monitoring Centre for Drugs and Drug Addiction , Europol. (2017). Drugs and the darknet. Perspectives for enforcement, research and policy. Publications Office of the European Union.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
European Monitoring Centre for Drugs and Drug Addiction , Europol. Drugs and the Darknet. Perspectives for Enforcement, Research and Policy. Luxemburgo: Publications Office of the European Union, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
European Monitoring Centre for Drugs and Drug Addiction , Europol. Drugs and the Darknet. Perspectives for Enforcement, Research and Policy. Publications Office of the European Union, 2017.
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