Sarnlao, Wanchai, and Sumalee Sawang. “Marketing Mix Factors and Reference Group Factors Influencing the Buying Decision of Latex Mattress Consumers in the Bangkok Metropolitan Region”. Journal of Humanities and Social Sciences, Rajapruk University 9, no. 3 (December 31, 2023): 84–98. Accessed May 25, 2024. https://so03.tci-thaijo.org/index.php/rpu/article/view/274236.