Witzel, B. S., & Little, M. E. (2016). Teaching elementary mathematics to struggling learners. The Guilford Press.
Chicago-viite (17. p.)Witzel, Bradley S., ja Mary E. Little. Teaching Elementary Mathematics to Struggling Learners. New York, London: The Guilford Press, 2016.
MLA-viite (9. p.)Witzel, Bradley S., ja Mary E. Little. Teaching Elementary Mathematics to Struggling Learners. The Guilford Press, 2016.
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