Sachs , I. (1965). Foreign Trade and Economic Development of Underdeveloped Countries. Asia Publishing House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSachs , Ignacy. Foreign Trade and Economic Development of Underdeveloped Countries. India: Asia Publishing House, 1965.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSachs , Ignacy. Foreign Trade and Economic Development of Underdeveloped Countries. Asia Publishing House, 1965.
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