Style de citation APA (7e éd.)
Heddens, J. W. (1979). Todays mathematics: Concepts and methods in elementary school mathematics (4th ed.). S.R.A.
Style de citation Chicago (17e éd.)
Heddens, James W. Todays Mathematics: Concepts and Methods in Elementary School Mathematics. 4th ed. Chicago: S.R.A, 1979.
Style de citation MLA (9e éd.)
Heddens, James W. Todays Mathematics: Concepts and Methods in Elementary School Mathematics. 4th ed. S.R.A, 1979.
Attention : ces citations peuvent ne pas être correctes à 100%.