APA Edition Citation

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

Chicago Edition Citation

Pettofrezzo, Anthony J., and Donald R. Byrkit. Elements of Number Theory. Prentice-Hall Inc., Englewood Cliffs, New Jersy, 1970.

MLA Edition Citation

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

Warning: These citations may not always be 100% accurate.