@book{61989,
	author = {Koch, Paul and American Water Works Association},
	title = {Water sources /},
	publisher = {American Water Works Association,},
	year = {2010},
	series = {Principles and practices of water supply operations series},
	address = {Denver, CO :},
	edition = {4th ed.},
	note = {Rev. ed. of: Water sources. 2003}
}