Viessman, W., & Hammer, M. J. (1993). Water supply and pollution control (5th ed.). HarperCollins College Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रViessman, Warren, और Mark J. Hammer. Water Supply and Pollution Control. 5th ed. New York: HarperCollins College Publishers, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रViessman, Warren, और Mark J. Hammer. Water Supply and Pollution Control. 5th ed. HarperCollins College Publishers, 1993.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.