APA (7th ed.) Citation

Ogilvy, C. S. (1972). Tomorrow's math: Unsolved problems for the amateur (2. ed.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Ogilvy, Charles Stanley. Tomorrow's Math: Unsolved Problems for the Amateur. 2. ed. New York [u.a.]: Oxford Univ. Press, 1972.

MLA (9th ed.) Citation

Ogilvy, Charles Stanley. Tomorrow's Math: Unsolved Problems for the Amateur. 2. ed. Oxford Univ. Press, 1972.