Hagan, E. (2012). Encyclopaedia of water & wastewater microbiology: Methods, analysis & laboratories sampling strategies. Auris Reference.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHagan, Edmund. Encyclopaedia of Water & Wastewater Microbiology: Methods, Analysis & Laboratories Sampling Strategies. Nottingham: Auris Reference, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHagan, Edmund. Encyclopaedia of Water & Wastewater Microbiology: Methods, Analysis & Laboratories Sampling Strategies. Auris Reference, 2012.
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