Wolfgang, C. H. (1999). Strategies for teaching self-discipline in the middle grades. Allyn and Bacon.
Chicago Style aipamenaWolfgang, Charles H. Strategies for Teaching Self-discipline in the Middle Grades. Allyn and Bacon, 1999.
MLA aipamenaWolfgang, Charles H. Strategies for Teaching Self-discipline in the Middle Grades. Allyn and Bacon, 1999.
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