APA (7th ed.) Citation

Andreescu, T., & Pohoata, C. (2014). 110 geometry problems: For the international mathematical olympiad. XYZ Press.

Chicago Style (17th ed.) Citation

Andreescu, Titu, and Cosmin Pohoata. 110 Geometry Problems: For the International Mathematical Olympiad. Plano, TX: XYZ Press, 2014.

MLA (9th ed.) Citation

Andreescu, Titu, and Cosmin Pohoata. 110 Geometry Problems: For the International Mathematical Olympiad. XYZ Press, 2014.

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