APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.