APA (7th ed.) Citation

World Health Organization. (1998). Guidelines for drinking - water quality: Health Criteria and other supporting information (second.). World Health Organization.

Chicago Style (17th ed.) Citation

World Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. Geneva: World Health Organization, 1998.

MLA (8th ed.) Citation

World Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. World Health Organization, 1998.