Milbank Memorial Fund. (1957). The nature and transmission of the genetic and cultural characteristucs of human populations. s.n.
Dyfyniad Arddull ChicagoMilbank Memorial Fund. The Nature and Transmission of the Genetic and Cultural Characteristucs of Human Populations. New York: s.n, 1957.
Dyfyniad MLAMilbank Memorial Fund. The Nature and Transmission of the Genetic and Cultural Characteristucs of Human Populations. s.n, 1957.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.