APA (7th ed.) Citation

Stillwell, J. (2003). Elements of Number Theory. Springer New York. https://doi.org/10.1007/978-0-387-21735-2

Chicago Style (17th ed.) Citation

Stillwell, John. Elements of Number Theory. New York, NY: Springer New York, 2003. https://doi.org/10.1007/978-0-387-21735-2.

MLA (9th ed.) Citation

Stillwell, John. Elements of Number Theory. Springer New York, 2003. https://doi.org/10.1007/978-0-387-21735-2.