Prapatpong Upala. 2007. Development of Stated Preference (SP) technique for determining service quality of paratransit. Field of Study Civil Engineering, Chulalongkorn University;
Prapatpong Upala. (2007) Development of Stated Preference (SP) technique for determining service quality of paratransit . Chulalongkorn University/Bangkok.
Prapatpong Upala. Development of Stated Preference (SP) technique for determining service quality of paratransit. . Bangkok:Chulalongkorn University, 2007.
Prapatpong Upala. (2007) Development of Stated Preference (SP) technique for determining service quality of paratransit . Chulalongkorn University/Bangkok.