APA (7th ed.) Citation

Le, H. C., & Le, H. K. (2010). Selected problems of the Vietnamese Mathematical Olympiad (1962-2009). World Scientific.

Chicago Style (17th ed.) Citation

Le, Hai Chau, and Hai Khoi Le. Selected Problems of the Vietnamese Mathematical Olympiad (1962-2009). Singapore: World Scientific, 2010.

MLA (9th ed.) Citation

Le, Hai Chau, and Hai Khoi Le. Selected Problems of the Vietnamese Mathematical Olympiad (1962-2009). World Scientific, 2010.

Warning: These citations may not always be 100% accurate.