UNG Meng Hong. 2007. Stated preference analysis of bus service attributes in Phnom Penh. Field of Study Civil Engineering, Chulalongkorn University;
UNG Meng Hong. (2007) Stated preference analysis of bus service attributes in Phnom Penh . Chulalongkorn University/Bangkok.
UNG Meng Hong. Stated preference analysis of bus service attributes in Phnom Penh. . Bangkok:Chulalongkorn University, 2007.
UNG Meng Hong. (2007) Stated preference analysis of bus service attributes in Phnom Penh . Chulalongkorn University/Bangkok.