Spring, J. H., & Joel Spring. The American school : a global context: From the Puritans to the Obama administration. New York: McGraw-Hill.
Παραπομπή Chicago StyleSpring, Joel H., και Joel Spring. The American School : A Global Context: From the Puritans to the Obama Administration. New York: McGraw-Hill.
Παραπομπή MLASpring, Joel H., και Joel Spring. The American School : A Global Context: From the Puritans to the Obama Administration. New York: McGraw-Hill.
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