Singh, A. L. (1978). Economics and Geography of Agricultural Land. B.R. Publishing Corporation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Abha Lakshmi. Economics and Geography of Agricultural Land. B.R. Publishing Corporation, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Abha Lakshmi. Economics and Geography of Agricultural Land. B.R. Publishing Corporation, 1978.
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