Association for Supervision and Curriculum Development (U.S.). Yearbook Committee, 1972. (1972). A New look at progressive education. Association for Supervision and Curriculum Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Association for Supervision and Curriculum Development (U.S.). Yearbook Committee, 1972. A New Look at Progressive Education. Wash.: Association for Supervision and Curriculum Development, 1972.
Παραπομπή σε μορφή MLA (8th εκδ.)Association for Supervision and Curriculum Development (U.S.). Yearbook Committee, 1972. A New Look at Progressive Education. Association for Supervision and Curriculum Development, 1972.
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