World Health Organization; United Nations Environment Programme. 1991. Surface water drainage for low-income communities. Geneva: World Health Organization.
Citace podle APA (7th ed.)World Health Organization & United Nations Environment Programme. (1991). Surface water drainage for low-income communities. World Health Organization.
Citace podle Chicago (17th ed.)World Health Organization a United Nations Environment Programme. Surface Water Drainage for Low-income Communities. Geneva: World Health Organization, 1991.
Citace podle MLA (9th ed.)World Health Organization a United Nations Environment Programme. Surface Water Drainage for Low-income Communities. World Health Organization, 1991.
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