APA (7th ed.) Citation

Andreescu, T., & Feng, Z. (2003). 102 combinatorial problems: From the training of the USA IMO team. Birkhäuser.

Chicago Style (17th ed.) Citation

Andreescu, Titu, and Zuming Feng. 102 Combinatorial Problems: From the Training of the USA IMO Team. Boston ; Basel ; Berlin: Birkhäuser, 2003.

MLA (9th ed.) Citation

Andreescu, Titu, and Zuming Feng. 102 Combinatorial Problems: From the Training of the USA IMO Team. Birkhäuser, 2003.