APA (7th ed.) Citation

Polya, G. (1957). How to solve it: A new aspect of mathematical method. Doubleday Anchor Books.

Chicago Style (17th ed.) Citation

Polya, George. How to Solve It: A New Aspect of Mathematical Method. New York: Doubleday Anchor Books, 1957.

MLA (9th ed.) Citation

Polya, George. How to Solve It: A New Aspect of Mathematical Method. Doubleday Anchor Books, 1957.