APA استشهاد

Polya, G. (2001). How to solve it: Mathematical method.-2nd ed (2nd ed.). Prentice Hall of India.

استشهاد بنمط شيكاغو

Polya, G. How to Solve It: Mathematical Method.-2nd Ed. 2nd ed. New Delhi: Prentice Hall of India, 2001.

MLA استشهاد

Polya, G. How to Solve It: Mathematical Method.-2nd Ed. 2nd ed. Prentice Hall of India, 2001.