(1981). Symposium on India and the international drinking water supply and sanitation decade: Proceedings. Delhi Science Forum and Water World.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSymposium on India and the International Drinking Water Supply and Sanitation Decade: Proceedings. Delhi Science Forum and Water World, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSymposium on India and the International Drinking Water Supply and Sanitation Decade: Proceedings. Delhi Science Forum and Water World, 1981.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.