Singh, A. (1986). Law of Involvency. Eastern Book co. Lacknow.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Avtar. Law of Involvency. Lucknow: Eastern Book co. Lacknow, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Avtar. Law of Involvency. Eastern Book co. Lacknow, 1986.
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