Smith, F. R., & Cox, C. B. (1969). New strategies and curriculum in social studies. Rand McNally.
Cita Chicago Style (17a ed.)Smith, Frederick Robert, y Charles Benjamin Cox. New Strategies and Curriculum in Social Studies. Chicago: Rand McNally, 1969.
Cita MLA (9a ed.)Smith, Frederick Robert, y Charles Benjamin Cox. New Strategies and Curriculum in Social Studies. Rand McNally, 1969.
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