Lever, M. (2003). Number: Activities for children with mathematical learning difficulties. D. Fulton.
Chicago Style (17. basım) AtıfLever, Mel. Number: Activities for Children with Mathematical Learning Difficulties. London: D. Fulton, 2003.
MLA (9th ed.) AtıfLever, Mel. Number: Activities for Children with Mathematical Learning Difficulties. D. Fulton, 2003.
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