Citazione APA

Richard Courant. (2013). What is mathematics: An elementary approach to ideas and methods (2.). Oxford university press.

Stile di citazione Chicago

Richard Courant. What Is Mathematics: An Elementary Approach to Ideas and Methods. 2. New Delhi: Oxford university press, 2013.

Citazione MLA

Richard Courant. What Is Mathematics: An Elementary Approach to Ideas and Methods. 2. Oxford university press, 2013.