APA (7th ed.) Citation

Ulam, S. M. (1960). A collection of mathematical problems. Interscience Publishers.

Chicago Style (17th ed.) Citation

Ulam, Stanislaw M. A Collection of Mathematical Problems. New York: Interscience Publishers, 1960.

MLA (9th ed.) Citation

Ulam, Stanislaw M. A Collection of Mathematical Problems. Interscience Publishers, 1960.