APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Pólya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. Combined ed. New York [u.a.]: Wiley, 1981.

MLA (9th ed.) Citation

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