Jensen, A. R. (1973). Educability and group differences. Harper and Row.
Dyfyniad Arddull ChicagoJensen, Arthur Robert. Educability and Group Differences. New York: Harper and Row, 1973.
Dyfyniad MLAJensen, Arthur Robert. Educability and Group Differences. Harper and Row, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.