Andreescu, T., & Gelca, R. (2010). Mathematical olympiad challenges. Springer.
シカゴスタイル引用形Andreescu, Titu, , Razvan Gelca. Mathematical Olympiad Challenges. New Delhi: Springer, 2010.
MLA引用形式Andreescu, Titu, , Razvan Gelca. Mathematical Olympiad Challenges. Springer, 2010.
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