Citazione Stile APA (7a Edizione)

Courant, R., Robbins, H., & Stewart, I. (1996). What is mathematics: An elementary approach to ideas and methods.

Citazione stile Chigago Style (17a edizione)

Courant, Richard, Herbert Robbins, e Ian Stewart. What Is Mathematics: An Elementary Approach to Ideas and Methods. Oxford Univ. Press, 1996.

Citatione MLA (9a ed.)

Courant, Richard, et al. What Is Mathematics: An Elementary Approach to Ideas and Methods. 1996.