APA (7 वां संस्करण) प्रशस्ति पत्र
(2020). Impact of COVID-19 on drug services and help-seeking in Europe. European Monitoring Centre for Drugs and Drug Addiction.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Impact of COVID-19 on Drug Services and Help-seeking in Europe. Lisboa: European Monitoring Centre for Drugs and Drug Addiction, 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Impact of COVID-19 on Drug Services and Help-seeking in Europe. European Monitoring Centre for Drugs and Drug Addiction, 2020.
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