Water Environment Federation. (2007). Automation of wastewater treatment facilities: WEF manual of practice no. 21 (3rd ed.). McGraw-Hill.
Chicago Style (17. basım) AtıfWater Environment Federation. Automation of Wastewater Treatment Facilities: WEF Manual of Practice No. 21. 3rd ed. New York: McGraw-Hill, 2007.
MLA (8th ed.) AtıfWater Environment Federation. Automation of Wastewater Treatment Facilities: WEF Manual of Practice No. 21. 3rd ed. McGraw-Hill, 2007.
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