APA (7th ed.) Citation

Wallis, W. D., & George, J. C. (2017). Introduction to combinatorics (Second edition.). CRC Press, Taylor and Francis Group.

Chicago Style (17th ed.) Citation

Wallis, W. D., and J. C. George. Introduction to Combinatorics. Second edition. Boca Raton: CRC Press, Taylor and Francis Group, 2017.

MLA (9th ed.) Citation

Wallis, W. D., and J. C. George. Introduction to Combinatorics. Second edition. CRC Press, Taylor and Francis Group, 2017.