Powell, G. M. (1961). Use of commercial policies for purposes of economic development with respect to selected underdeveloped countries. [s.n.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPowell, George McCutchan. Use of Commercial Policies for Purposes of Economic Development with Respect to Selected Underdeveloped Countries. Urbana, Ill: [s.n, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPowell, George McCutchan. Use of Commercial Policies for Purposes of Economic Development with Respect to Selected Underdeveloped Countries. [s.n, 1961.
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