Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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