Joel H., S. (2000). American Education (9th Edn.). McGraw Hill.
Dyfyniad Arddull ChicagoJoel H., Spring. American Education. 9th Edn. McGraw Hill, 2000.
Dyfyniad MLAJoel H., Spring. American Education. 9th Edn. McGraw Hill, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.