Não informado. (2012). Water and Sanitation. Canadian Engineer Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Water and Sanitation. Toronto, Canada: Canadian Engineer Publications, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Water and Sanitation. Canadian Engineer Publications, 2012.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.