APA (7th ed.) Zitazioa
Copeland, R. W. (1979). How children learn matematics: Teaching implications of Piaget research.
Chicago Style (17th ed.) Zitazioa
Copeland, Richard W. How Children Learn Matematics: Teaching Implications of Piaget Research. 1979.
MLA (9th ed.) Zitazioa
Copeland, Richard W. How Children Learn Matematics: Teaching Implications of Piaget Research. 1979.
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