Cofman, J. (1996). What to solve?: Problems and suggestions for young mathematicians (Reprinted.). Clarendon Press.
Chicago-Zitierstil (17. Ausg.)Cofman, Judita. What to Solve?: Problems and Suggestions for Young Mathematicians. Reprinted. Oxford: Clarendon Press, 1996.
MLA-Zitierstil (9. Ausg.)Cofman, Judita. What to Solve?: Problems and Suggestions for Young Mathematicians. Reprinted. Clarendon Press, 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.