Schaefer, R. J. (1967). The school as a center of inquiry. Harper & Row.
Chicago-viite (17. p.)Schaefer, Robert Joseph. The School as a Center of Inquiry. New York: Harper & Row, 1967.
MLA-viite (9. p.)Schaefer, Robert Joseph. The School as a Center of Inquiry. Harper & Row, 1967.
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