Citazione Stile APA (7a Edizione)

Pólya, G. (1957). How to solve it: A new aspect of mathematical method (2a. ed.). Princeton University.

Citazione stile Chigago Style (17a edizione)

Pólya, George. How to Solve It: A New Aspect of Mathematical Method. 2a. ed. Princeton: Princeton University, 1957.

Citatione MLA (9a ed.)

Pólya, George. How to Solve It: A New Aspect of Mathematical Method. 2a. ed. Princeton University, 1957.