Gwynn, J. M. (1960). Curriculum principles and social trends (3rd ed.). Macmillan.
Chicago Style aipamenaGwynn, John Minor. Curriculum Principles and Social Trends. 3rd ed. New York: Macmillan, 1960.
MLA aipamenaGwynn, John Minor. Curriculum Principles and Social Trends. 3rd ed. Macmillan, 1960.
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