Ritthihiranrat, Kunjanith, and Chairirk Keawpromman. 2019. “Influence of Motivation Marketing Mix Factor and the Perception of the Benefits on Decision to Install a Dash Camera for Car Users in Bangkok”. Rajapark Journal 13 (29). Bangkok, Thailand:90-101. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/131305.