Thumann, A. (1987). Plant engineers and managers guide to energy conservation (3rd ed.). Fairmont Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThumann, Albert. Plant Engineers and Managers Guide to Energy Conservation. 3rd ed. Lilburn, GA: Fairmont Press, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रThumann, Albert. Plant Engineers and Managers Guide to Energy Conservation. 3rd ed. Fairmont Press, 1987.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.