APA সাইটেশন

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

শিকাগো স্টাইলে সাইটেশন

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

এমএলএ সাইটেশন

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