APA (7th ed.) Citation

Polya, G. (1957). How to solve it: A new aspect of mathematical method (2d ed.). Doubleday.

Chicago Style (17th ed.) Citation

Polya, George. How to Solve It: A New Aspect of Mathematical Method. 2d ed. Garden City, N.Y.: Doubleday, 1957.

MLA (8th ed.) Citation

Polya, George. How to Solve It: A New Aspect of Mathematical Method. 2d ed. Doubleday, 1957.

Warning: These citations may not always be 100% accurate.