Cita APA

Andreescu, T., & Gelca, R. (2010). Mathematical olympiad challenges. Springer.

Chicago Edition Citation

Andreescu, Titu, i Razvan Gelca. Mathematical Olympiad Challenges. New Delhi: Springer, 2010.

Cita MLA

Andreescu, Titu, i Razvan Gelca. Mathematical Olympiad Challenges. Springer, 2010.