Dyfyniad APA

World Health Organization & ebrary, Inc. (2010). World health statistics. World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization and Inc ebrary. World Health Statistics. Geneva: World Health Organization, 2010.

Dyfyniad MLA

World Health Organization and Inc ebrary. World Health Statistics. World Health Organization, 2010.

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