APA ציטוט

Pettofrezzo, A. J., & Byrkit, D. R. (1970). Elements of number theory. Prentice Hall.

Chicago Edition Citation

Pettofrezzo, Anthony J., and Donald R. Byrkit. Elements of Number Theory. London: Prentice Hall, 1970.

ציטוט MLA

Pettofrezzo, Anthony J., and Donald R. Byrkit. Elements of Number Theory. Prentice Hall, 1970.