Lee, J. M. (1950). The child in his curriculum (2nd ed.). Appleton-Century-Crofts.
Dyfyniad Arddull ChicagoLee, Jonathan Murray. The Child in His Curriculum. 2nd ed. New York: Appleton-Century-Crofts, 1950.
Dyfyniad MLALee, Jonathan Murray. The Child in His Curriculum. 2nd ed. Appleton-Century-Crofts, 1950.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.