Mahabir Singh. (2019). IMO - OLYMPIAD WORK BOOK - 5 (2019-20.). MTG Learning Media.
Chicagoスタイル(17版)引用形式Mahabir Singh. IMO - OLYMPIAD WORK BOOK - 5. 2019-20. MTG Learning Media, 2019.
MLA(9版)引用形式Mahabir Singh. IMO - OLYMPIAD WORK BOOK - 5. 2019-20. MTG Learning Media, 2019.
警告: この引用は必ずしも正確ではありません.