Kittipat Sittisomboon และ Thanakorn Neanna. (2013) Factors affected to the acceptance and use of global positioning system in the public transportation industry of thailand. Mahidol University:ม.ป.ท.Kittipat Sittisomboon และ Thanakorn Neanna. 2013. Factors affected to the acceptance and use of global positioning system in the public transportation industry of thailand. ม.ป.ท.:Mahidol University;Kittipat Sittisomboon และ Thanakorn Neanna. Factors affected to the acceptance and use of global positioning system in the public transportation industry of thailand. ม.ป.ท.:Mahidol University, 2013. Print.