APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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