Gwynn, J. M., & Chase, J. B. (1969). Curriculum principles and social trends (4th ed.). The Macmillan Co.
Cita Chicago Style (17a ed.)Gwynn, J. Minor, y John B. Chase. Curriculum Principles and Social Trends. 4th ed. New York: The Macmillan Co, 1969.
Cita MLA (9a ed.)Gwynn, J. Minor, y John B. Chase. Curriculum Principles and Social Trends. 4th ed. The Macmillan Co, 1969.
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