Association for Supervision and Curriculum Development & Squire, J. R. (1972). A new look at progressive education. s.n.
Chicago-viite (17. p.)Association for Supervision and Curriculum Development ja James R. Squire. A New Look at Progressive Education. Washington, D.C: s.n, 1972.
MLA-viite (9. p.)Association for Supervision and Curriculum Development ja James R. Squire. A New Look at Progressive Education. s.n, 1972.
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