Courant, R., & Robbins, H. (1941). What is mathematics: An elementary approach to ideas and methods by Richard Courant and Herbert Robbins. Oxford University.
Citazione stile Chigago Style (17a edizione)Courant, Richard, e Herbert Robbins. What Is Mathematics: An Elementary Approach to Ideas and Methods by Richard Courant and Herbert Robbins. Londres: Oxford University, 1941.
Citatione MLA (9a ed.)Courant, Richard, e Herbert Robbins. What Is Mathematics: An Elementary Approach to Ideas and Methods by Richard Courant and Herbert Robbins. Oxford University, 1941.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.