Mahabir Singh. (2019). IMO - OLYMPIAD WORK BOOK - 5 (2019-20.). MTG Learning Media.
Cita Chicago (17th ed.)Mahabir Singh. IMO - OLYMPIAD WORK BOOK - 5. 2019-20. MTG Learning Media, 2019.
Cita MLA (9th ed.)Mahabir Singh. IMO - OLYMPIAD WORK BOOK - 5. 2019-20. MTG Learning Media, 2019.
Atenció: Aquestes cites poden no estar 100% correctes.