Simon, S. B., Kirschenbaum, H., & Howe, L. W. (1972). Values Clarification: A handbook of practical strategies for teachers and students (ed.). Hart Publishing Company.
Citace podle Chicago (17th ed.)Simon, Sidney B., Howard Kirschenbaum, a Leland W. Howe. Values Clarification: A Handbook of Practical Strategies for Teachers and Students. ed. New York: Hart Publishing Company, 1972.
Citace podle MLA (9th ed.)Simon, Sidney B., et al. Values Clarification: A Handbook of Practical Strategies for Teachers and Students. ed. Hart Publishing Company, 1972.
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