APA引文

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

Chicago Edition Citation

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

MLA引文

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