World Health Organization. 2011. Guidelines for drinking-water quality. 4th ed. Geneva: World Health Organization.
Citace podle APA (7th ed.)World Health Organization. (2011). Guidelines for drinking-water quality (4th ed.). World Health Organization.
Citace podle Chicago (17th ed.)World Health Organization. Guidelines for Drinking-water Quality. 4th ed. Geneva: World Health Organization, 2011.
Citace podle MLA (9th ed.)World Health Organization. Guidelines for Drinking-water Quality. 4th ed. World Health Organization, 2011.
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