"Gregg, R. B. A philosophy of indian economic development. Navajivan pub. house.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Gregg, Richard B". A Philosophy of Indian Economic Development. Navajivan pub. house.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Gregg, Richard B". A Philosophy of Indian Economic Development. Navajivan pub. house.
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