Thiangkratok, W., and W. Chaiyasoonthorn. “Service Marketing Mix Affecting Consumer Behavior of International Brands Bubble Milk Tea in Bangkok”. The Journal of Integrated Business Innovation and Sustainability (JIBIS), vol. 9, no. 2, Dec. 2019, pp. 181-94, https://so02.tci-thaijo.org/index.php/fam/article/view/233231.