Knauthe, H. E. (1967). Medium-term Planning of National Economy. The Institute of National Planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKnauthe, Habil Erhart. Medium-term Planning of National Economy. Cairo: The Institute of National Planning, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKnauthe, Habil Erhart. Medium-term Planning of National Economy. The Institute of National Planning, 1967.
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