APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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

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