World Health Organization & World Health Organization. (1985). Guidelines for drinking-water quality (2nd ed.). World Health Organization.
Citace podle Chicago (17th ed.)World Health Organization a World Health Organization. Guidelines for Drinking-water Quality. 2nd ed. Geneva: World Health Organization, 1985.
Citace podle MLA (8th ed.)World Health Organization a World Health Organization. Guidelines for Drinking-water Quality. 2nd ed. World Health Organization, 1985.
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