Gupta, D. (1968). Evaluation of high yielding varieties programme, 1967-68: A case study of district Saharanpur. Univ. of Delhi (AERC).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGupta, D.P. Evaluation of High Yielding Varieties Programme, 1967-68: A Case Study of District Saharanpur. Univ. of Delhi (AERC), 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGupta, D.P. Evaluation of High Yielding Varieties Programme, 1967-68: A Case Study of District Saharanpur. Univ. of Delhi (AERC), 1968.
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