Παραπομπή APA

Pβolya, G. (1981). Mathematical discovery: On understanding, learning, and teaching problem solving (Combined ed.). New York: Wiley.

Παραπομπή Chicago Style

Pβolya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. Combined ed. New York: Wiley, 1981.

Παραπομπή MLA

Pβolya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. Combined ed. New York: Wiley, 1981.

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