Dyfyniad APA

Freudenthal, H. (1973). Mathematics as an educational task. Reidel.

Dyfyniad Arddull Chicago

Freudenthal, Hans. Mathematics as an Educational Task. Dordrecht: Reidel, 1973.

Dyfyniad MLA

Freudenthal, Hans. Mathematics as an Educational Task. Reidel, 1973.

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