World Health Organization. (2011). Mental health atlas 2011. World health Organization.
Dyfyniad Arddull ChicagoWorld Health Organization. Mental Health Atlas 2011. Geneva, Switzerland: World health Organization, 2011.
Dyfyniad MLAWorld Health Organization. Mental Health Atlas 2011. World health Organization, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.