Polya, G. (1957). How to solve it: New aspect of mathematical methods (2nd ed.). Prenceton.
Čikaški stil citiranjaPolya, G. How to Solve It: New Aspect of Mathematical Methods. 2nd ed. New Jersey: Prenceton, 1957.
MLA način citiranjaPolya, G. How to Solve It: New Aspect of Mathematical Methods. 2nd ed. Prenceton, 1957.
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