American Public Health Association, American Water Works Association, & Water Pollution Control Federation. (1976). Standard methods: For examination of water and wastewater (14th ed.). American Public Health Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Public Health Association, American Water Works Association, और Water Pollution Control Federation. Standard Methods: For Examination of Water and Wastewater. 14th ed. Washington, DC: American Public Health Association, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican Public Health Association, et al. Standard Methods: For Examination of Water and Wastewater. 14th ed. American Public Health Association, 1976.
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