Παραπομπή APA

Polya, G. (1962). Mathematical Discovery .-Vol.1. John Wiley and Sons.

Παραπομπή Chicago Style

Polya, G. Mathematical Discovery .-Vol.1. New York: John Wiley and Sons, 1962.

Παραπομπή MLA

Polya, G. Mathematical Discovery .-Vol.1. John Wiley and Sons, 1962.