hansen, b. (1962). output- productivity and value added- productivity. the institute of national planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रhansen, bent. Output- Productivity and Value Added- Productivity. cairo: the institute of national planning, 1962.
एमएलए (9वां संस्करण) प्रशस्ति पत्रhansen, bent. Output- Productivity and Value Added- Productivity. the institute of national planning, 1962.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.