World Health Organization Unite Nations Environment Programme FAO. (2006). Who guidelines for the safe use of water, excreta and greywater: Wastewater use in agriculture. World Health Organization.
芝加哥风格引文World Health Organization Unite Nations Environment Programme FAO. Who Guidelines for the Safe Use of Water, Excreta and Greywater: Wastewater Use in Agriculture. Geneva: World Health Organization, 2006.
MLA引文World Health Organization Unite Nations Environment Programme FAO. Who Guidelines for the Safe Use of Water, Excreta and Greywater: Wastewater Use in Agriculture. World Health Organization, 2006.
警告：这些引文格式不一定是100％准确.