sach, k., & linsel, h. (1965). general organization of planning of industry. the institute of national planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रsach, kurt, और hermann linsel. General Organization of Planning of Industry. cairo: the institute of national planning, 1965.
एमएलए (9वां संस्करण) प्रशस्ति पत्रsach, kurt, और hermann linsel. General Organization of Planning of Industry. the institute of national planning, 1965.
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