APA (7th ed.) Citation

Geretschlager, R., Kalinowski,, J., & Svrcek, J. (2018). A central European olympiad: The mathematical duel. World Scientific.

Chicago Style (17th ed.) Citation

Geretschlager, Robert, Jozef Kalinowski,, and Jaroslav Svrcek. A Central European Olympiad: The Mathematical Duel. Singapore: World Scientific, 2018.

MLA (8th ed.) Citation

Geretschlager, Robert, et al. A Central European Olympiad: The Mathematical Duel. World Scientific, 2018.