อุดมชัยพัฒนากิจ อ., and อาชารุ่งโรจน์ ไ. “The Factors Affecting Coffee Consumption Behavior of Thai Premium Brand Coffee Shops in Bangkok”. SIAM COMMUNICATION REVIEW, vol. 17, no. 22, June 2018, pp. 135-42, https://so05.tci-thaijo.org/index.php/commartsreviewsiamu/article/view/169677.