Heal, G. (1973). Theory of economic planning. North-Holland.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHeal, G.M. Theory of Economic Planning. North-Holland, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHeal, G.M. Theory of Economic Planning. North-Holland, 1973.
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