Chopra, R. N., & Chopra, I. C. (1965). Drug addiction: With special reference to India (First edition.). Council of Scientific & Industrial Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChopra, R. N., और I. C. Chopra. Drug Addiction: With Special Reference to India. First edition. New Delhi: Council of Scientific & Industrial Research, 1965.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChopra, R. N., और I. C. Chopra. Drug Addiction: With Special Reference to India. First edition. Council of Scientific & Industrial Research, 1965.
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