Dyfyniad APA

World Health Organization. (2011). World report on disability. World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. World Report on Disability. Geneva, Switzerland: World Health Organization, 2011.

Dyfyniad MLA

World Health Organization. World Report on Disability. World Health Organization, 2011.

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