(2005). Standard methods for the examination of water and wastewater (21st ed.). American Public Health Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStandard Methods for the Examination of Water and Wastewater. 21st ed. Washington, D.C: American Public Health Association, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रStandard Methods for the Examination of Water and Wastewater. 21st ed. American Public Health Association, 2005.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.