Pornprom Pahubutra และผู้แต่งคนอื่นๆ. (2020) A ROAD TEST STUDY ON SPEED SENSITIVE COLLAPSIBLE MECHANICAL SPEED BUMP. <i>International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies</i>, <i>11</i>(1), 11A01A: 1-8.Pornprom Pahubutra และผู้แต่งคนอื่นๆ. "A ROAD TEST STUDY ON SPEED SENSITIVE COLLAPSIBLE MECHANICAL SPEED BUMP". International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies 11 (2020):11A01A: 1-8.Pornprom Pahubutra และผู้แต่งคนอื่นๆ. A ROAD TEST STUDY ON SPEED SENSITIVE COLLAPSIBLE MECHANICAL SPEED BUMP. TuEngr.com:ม.ป.ท. 2020.