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Dyfyniad Arddull ChicagoWilliams, Cicely D. Primary Health Care Pioneer: The Selected Works of Dr. Cicely D. Williams. Geneva, Switzerland: World Federation of Public Health Associations and UNICEF, 1986.
Dyfyniad MLAWilliams, Cicely D. Primary Health Care Pioneer: The Selected Works of Dr. Cicely D. Williams. World Federation of Public Health Associations and UNICEF, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.