APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Pettofrezzo, Anthony J., and Donald R. Byrkit. Elements of Number Theory. Englewood Cliffs, N.J: Prentice-Hall, 1970.

MLA (9th ed.) Citation

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