World Health Organization United Nations Environment Programme. (1991). Surface water drainage for low-income communities. World Health Organization in collaboration with the United Nations Environment Programme.
芝加哥风格引文World Health Organization United Nations Environment Programme. Surface Water Drainage for Low-income Communities. Geneva: World Health Organization in collaboration with the United Nations Environment Programme, 1991.
MLA引文World Health Organization United Nations Environment Programme. Surface Water Drainage for Low-income Communities. World Health Organization in collaboration with the United Nations Environment Programme, 1991.
警告：这些引文格式不一定是100％准确.