Andreescu, T., & Gelca, R. (2010). Mathematical olympiad challenges. Springer.
Chicago Edition CitationAndreescu, Titu, and Razvan Gelca. Mathematical Olympiad Challenges. New Delhi: Springer, 2010.
MLA Edition CitationAndreescu, Titu, and Razvan Gelca. Mathematical Olympiad Challenges. Springer, 2010.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.