Dyfyniad APA

World Health Organization. (1999). Reduction of maternal mortality. World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Reduction of Maternal Mortality. Geneva: World Health Organization, 1999.

Dyfyniad MLA

World Health Organization. Reduction of Maternal Mortality. World Health Organization, 1999.

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