Copeland, R. W., & Piaget, J. (1970). How children learn mathematics: Teaching implications of Piaget's research. Macmillan.
Chicago Style (17. basım) AtıfCopeland, Richard W., ve Jean Piaget. How Children Learn Mathematics: Teaching Implications of Piaget's Research. London: Macmillan, 1970.
MLA (9th ed.) AtıfCopeland, Richard W., ve Jean Piaget. How Children Learn Mathematics: Teaching Implications of Piaget's Research. Macmillan, 1970.
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