APA Edition Citation

Courant, R., & Robbins, H. (1996). What is mathematics?: An elementary approach to ideas and methods (2nd ed.). Oxford University Press.

Chicago Edition Citation

Courant, Richard, and Herbert Robbins. What Is Mathematics?: An Elementary Approach to Ideas and Methods. 2nd ed. New York: Oxford University Press, 1996.

MLA Edition Citation

Courant, Richard, and Herbert Robbins. What Is Mathematics?: An Elementary Approach to Ideas and Methods. 2nd ed. Oxford University Press, 1996.