World Health Organization. (2014). Progress on sanitation and drinking-water: 2014 update. World Health Organization.
Successfully copied to clipboard
Copying to clipboard failed
Dyfyniad Arddull Chicago
World Health Organization. Progress on Sanitation and Drinking-water: 2014 Update. Geneva, Switzerland: World Health Organization, 2014.
Successfully copied to clipboard
Copying to clipboard failed
Dyfyniad MLA
World Health Organization. Progress on Sanitation and Drinking-water: 2014 Update. World Health Organization, 2014.
Successfully copied to clipboard
Copying to clipboard failed
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.