Cita APA (7th ed.)
World Health Organization, UNICEF, & ebrary, Inc. (2010). Progress on sanitation and drinking water: 2010 update. World Health Organization.
Cita Chicago (17th ed.)
World Health Organization, UNICEF, i Inc ebrary. Progress on Sanitation and Drinking Water: 2010 Update. Geneva: World Health Organization, 2010.
Cita MLA (9th ed.)
World Health Organization, et al. Progress on Sanitation and Drinking Water: 2010 Update. World Health Organization, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.