Cita APA (7th ed.)

World Health Organization & World Health Organization. (1985). Guidelines for drinking-water quality (2nd ed.). World Health Organization.

Cita Chicago (17th ed.)

World Health Organization i World Health Organization. Guidelines for Drinking-water Quality. 2nd ed. Geneva: World Health Organization, 1985.

Cita MLA (8th ed.)

World Health Organization i World Health Organization. Guidelines for Drinking-water Quality. 2nd ed. World Health Organization, 1985.