APA (7th ed.) Citation

Cofman, J. (1990). What to solve?: Problems and suggestions for young mathematicians (1. publ., reprint.). Clarendon Press.

Chicago Style (17th ed.) Citation

Cofman, Judita. What to Solve?: Problems and Suggestions for Young Mathematicians. 1. publ., reprint. Oxford: Clarendon Press, 1990.

MLA (9th ed.) Citation

Cofman, Judita. What to Solve?: Problems and Suggestions for Young Mathematicians. 1. publ., reprint. Clarendon Press, 1990.