

@booklet {1918,
	title = {WHO guidelines for the safe use of wastewater, excreta and greywater.},
	volume = {4},
	year = {2006},
	publisher = {WHO (http://www.susana.org/en/resources/library/details/1004). Last Accessed July 2015},
	type = {Electronic Article},
	author = {WHO}
}
