Boonsap Witchayangkoon และผู้แต่งคนอื่นๆ. (2019) AN EXPERIMENT ON SPEED BUMPS BUILT WITH USED PNEUMATIC RUBBER TIRES. <i>International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies</i>, <i>10</i>(14), 10A14D: 1-7.Boonsap Witchayangkoon และผู้แต่งคนอื่นๆ. "AN EXPERIMENT ON SPEED BUMPS BUILT WITH USED PNEUMATIC RUBBER TIRES". International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies 10 (2019):10A14D: 1-7.Boonsap Witchayangkoon และผู้แต่งคนอื่นๆ. AN EXPERIMENT ON SPEED BUMPS BUILT WITH USED PNEUMATIC RUBBER TIRES. TuEngr Group:ม.ป.ท. 2019.