Newell, K. W. (1975). Health by the people. World Health Organization.
Dyfyniad Arddull ChicagoNewell, Kenneth W. Health by the People. Geneva: World Health Organization, 1975.
Dyfyniad MLANewell, Kenneth W. Health by the People. World Health Organization, 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.