APA (7th ed.) Citation

Niven, I. M., & Zuckerman, H. S. (1980). An introduction to the theory of numbers (4th ed.). John Wiley.

Chicago Style (17th ed.) Citation

Niven, Ivan Morton, and Herbert S. Zuckerman. An Introduction to the Theory of Numbers. 4th ed. New York: John Wiley, 1980.

MLA (9th ed.) Citation

Niven, Ivan Morton, and Herbert S. Zuckerman. An Introduction to the Theory of Numbers. 4th ed. John Wiley, 1980.