Courant, R., & Robbins, H. (1941). What is mathematics?: An elementary approach to ideas and methods. Oxford University Press.
Chicago Style (17th ed.) CitationCourant, Richard, and Herbert Robbins. What Is Mathematics?: An Elementary Approach to Ideas and Methods. London: Oxford University Press, 1941.
MLA (9th ed.) CitationCourant, Richard, and Herbert Robbins. What Is Mathematics?: An Elementary Approach to Ideas and Methods. Oxford University Press, 1941.
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