Courant, R., & Robbins, H. (1941). What is mathematics: An elementary approach to ideas and methods. Oxford University.
استشهاد بنمط شيكاغوCourant, Richard, و Herbert Robbins. What Is Mathematics: An Elementary Approach to Ideas and Methods. London: Oxford University, 1941.
MLA استشهادCourant, Richard, و Herbert Robbins. What Is Mathematics: An Elementary Approach to Ideas and Methods. Oxford University, 1941.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.