Freudenthal, H. (1972). Mathematics as an Educational Task. Springer Netherlands.
Chicago Style (17th ed.) CitationFreudenthal, Hans. Mathematics as an Educational Task. Dordrecht: Springer Netherlands, 1972.
MLA (9th ed.) CitationFreudenthal, Hans. Mathematics as an Educational Task. Springer Netherlands, 1972.
Warning: These citations may not always be 100% accurate.