Pólya, G. (1981). Mathematical discovery: On understanding, learning, and teaching problem solving (Combined ed.). Wiley.
Chicago-Zitierstil (17. Ausg.)Pólya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. Combined ed. New York [u.a.]: Wiley, 1981.
MLA-Zitierstil (9. Ausg.)Pólya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. Combined ed. Wiley, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.