Gittinger, J. P. (1966). The literature of agricultural planning. National Planning Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGittinger, James Price. The Literature of Agricultural Planning. [Washington]: National Planning Association, 1966.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGittinger, James Price. The Literature of Agricultural Planning. National Planning Association, 1966.
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