Dyfyniad APA

Polya, G. (1957). How to solve it: New aspect of mathematical methods (2nd ed.). Prenceton.

Dyfyniad Arddull Chicago

Polya, G. How to Solve It: New Aspect of Mathematical Methods. 2nd ed. New Jersey: Prenceton, 1957.

Dyfyniad MLA

Polya, G. How to Solve It: New Aspect of Mathematical Methods. 2nd ed. Prenceton, 1957.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.