Schulmeister, D. (1971). Some basic questions on foreign trade planning. The Institute of National Planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchulmeister, Dieter. Some Basic Questions on Foreign Trade Planning. Cairo: The Institute of National Planning, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSchulmeister, Dieter. Some Basic Questions on Foreign Trade Planning. The Institute of National Planning, 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.