Frazier, A. (1972). Open schools for children. Association for Supervision and Curriculum Development.
Dyfyniad Arddull ChicagoFrazier, Alexander. Open Schools for Children. Washington, DC: Association for Supervision and Curriculum Development, 1972.
Dyfyniad MLAFrazier, Alexander. Open Schools for Children. Association for Supervision and Curriculum Development, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.