APA (7th ed.) Citation

Andreescu, T., & Enescu, B. (2011). Mathematical Olympiad treasures (Second edition.). Birkhäuser.

Chicago Style (17th ed.) Citation

Andreescu, Titu, and Bogdan Enescu. Mathematical Olympiad Treasures. Second edition. New York ; Dordrecht ; Heidelberg ; London: Birkhäuser, 2011.

MLA (9th ed.) Citation

Andreescu, Titu, and Bogdan Enescu. Mathematical Olympiad Treasures. Second edition. Birkhäuser, 2011.

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