APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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