APA (7th ed.) Citation

Cofman, J. (1995). Numbers and shapes revisited: More problems for young mathematicians. Clarendon.

Chicago Style (17th ed.) Citation

Cofman, Judita. Numbers and Shapes Revisited: More Problems for Young Mathematicians. Oxford: Clarendon, 1995.

MLA (9th ed.) Citation

Cofman, Judita. Numbers and Shapes Revisited: More Problems for Young Mathematicians. Clarendon, 1995.