Pólya, G. (1957). How to solve it: A new aspect of mathematical method (2a. ed.). Princeton University.
Chicago-čujuhus (17. p.)Pólya, George. How to Solve It: A New Aspect of Mathematical Method. 2a. ed. Princeton: Princeton University, 1957.
MLA-čujuhus (9. p.)Pólya, George. How to Solve It: A New Aspect of Mathematical Method. 2a. ed. Princeton University, 1957.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.