Niven, I. (1991). Introduction to the theory of numbers. Wiley.
Cita Chicago (17th ed.)Niven, Ivan. Introduction to the Theory of Numbers. New York: Wiley, 1991.
Cita MLA (9th ed.)Niven, Ivan. Introduction to the Theory of Numbers. Wiley, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.