APA (7th ed.) Citation

Andreescu, T., & Gelca, R. (2000). Mathematical Olympiad challenges. Birkhauser.

Chicago Style (17th ed.) Citation

Andreescu, Titu, and Razvan Gelca. Mathematical Olympiad Challenges. Boston: Birkhauser, 2000.

MLA (8th ed.) Citation

Andreescu, Titu, and Razvan Gelca. Mathematical Olympiad Challenges. Birkhauser, 2000.

Warning: These citations may not always be 100% accurate.