Cita APA (7th ed.)
Lê, H. C., & Le, H. K. (2010). Selected problems of the Vietnamese Mathematical Olympiad (1962-2009). World Scientific.
Cita Chicago (17th ed.)
Lê, Hải Châu, i Hai Khoi Le. Selected Problems of the Vietnamese Mathematical Olympiad (1962-2009). Singapore ; London: World Scientific, 2010.
Cita MLA (9th ed.)
Lê, Hải Châu, i Hai Khoi Le. Selected Problems of the Vietnamese Mathematical Olympiad (1962-2009). World Scientific, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.