APA Citatie

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

Chicago Style citaat

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

MLA citatie

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