Polya, G. (1962). Mathematical Discovery .-Vol.1. John Wiley and Sons.
Chicago Edition CitationPolya, G. Mathematical Discovery .-Vol.1. New York: John Wiley and Sons, 1962.
Cita MLAPolya, G. Mathematical Discovery .-Vol.1. John Wiley and Sons, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.