Cita APA (7a ed.)
Polya, G. (1981). Mathematical discovery: On understanding, learning, and teaching problem solving (3. Ed.). Wiley.
Cita Chicago Style (17a ed.)
Polya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. 3. Ed. New York: Wiley, 1981.
Cita MLA (9a ed.)
Polya, George. Mathematical Discovery: On Understanding, Learning, and Teaching Problem Solving. 3. Ed. Wiley, 1981.
Precaución: Estas citas no son 100% exactas.