APA (7 वां संस्करण) प्रशस्ति पत्र

Sachs , I. (1965). Foreign Trade and Economic Development of Underdeveloped Countries. Asia Publishing House.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Sachs , Ignacy. Foreign Trade and Economic Development of Underdeveloped Countries. India: Asia Publishing House, 1965.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Sachs , Ignacy. Foreign Trade and Economic Development of Underdeveloped Countries. Asia Publishing House, 1965.

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