Chuaysri , . P., & Tongintarad, W. . (2025). The influence of reference groups on the decision making process of purchasing motorcycle parts online in the upper southern region of Thailand. Journal of Humanities and Social Sciences, Rajapruk University, 11(3), 123–142. retrieved from https://so03.tci-thaijo.org/index.php/rpu/article/view/296948