@book{116300,
	author = {Ward, Bess B. and American Society for Microbiology.},
	title = {Nitrification},
	publisher = {ASM Press,},
	year = {c2011.},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10509336}
}