Dyfyniad APA

World Health Organization. (2011). Mental health atlas 2011. World health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Mental Health Atlas 2011. Geneva, Switzerland: World health Organization, 2011.

Dyfyniad MLA

World Health Organization. Mental Health Atlas 2011. World health Organization, 2011.

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