APA (7th ed.) Citation

Chen, C., & Koh, K. (1992). Principles and techniques in combinatorics. World Scientific.

Chicago Style (17th ed.) Citation

Chen, Chuan-Chong, and Khee-Meng Koh. Principles and Techniques in Combinatorics. Singapore u.a: World Scientific, 1992.

MLA (9th ed.) Citation

Chen, Chuan-Chong, and Khee-Meng Koh. Principles and Techniques in Combinatorics. World Scientific, 1992.