Freudenthal, H. (1978). Change in mathematics education sicne the late 1950's: Ideas and realisation. D. Reidel.
Citazione stile Chigago Style (17a edizione)Freudenthal, Hans. Change in Mathematics Education Sicne the Late 1950's: Ideas and Realisation. Dordrecht: D. Reidel, 1978.
Citatione MLA (9a ed.)Freudenthal, Hans. Change in Mathematics Education Sicne the Late 1950's: Ideas and Realisation. D. Reidel, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.