Freudenthal, H. (1983). Didactical phenomenology of mathematical structures. Reidel.
Chicago Style (17th ed.) CitationFreudenthal, Hans. Didactical Phenomenology of Mathematical Structures. Dordretcht: Reidel, 1983.
MLA (9th ed.) CitationFreudenthal, Hans. Didactical Phenomenology of Mathematical Structures. Reidel, 1983.