APA (7th ed.) Citation
Polya, G. (1981). Mathematical discovery: On understanding, learning, and teaching problem solving (3. Ed.). Wiley.
Chicago Style (17th ed.) Citation
Polya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. 3. Ed. New York: Wiley, 1981.
MLA (9th ed.) Citation
Polya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. 3. Ed. Wiley, 1981.
Warning: These citations may not always be 100% accurate.