Avtar singh. (1977). Sale of Goods (2.). Eastern Book company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAvtar singh. Sale of Goods. 2. Lucknow: Eastern Book company, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAvtar singh. Sale of Goods. 2. Eastern Book company, 1977.
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