Dyfyniad APA

(1992). Readings on diarrhoea: Student Manual. World Health Organization.

Dyfyniad Arddull Chicago

Readings on Diarrhoea: Student Manual. Geneva: World Health Organization, 1992.

Dyfyniad MLA

Readings on Diarrhoea: Student Manual. World Health Organization, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.