Não informado. (1964). Water works and wastes engineering. R.H. Donnelley, Magazine Publishing Division.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Water Works and Wastes Engineering. New York: R.H. Donnelley, Magazine Publishing Division, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Water Works and Wastes Engineering. R.H. Donnelley, Magazine Publishing Division, 1964.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.