Thongkam, P., and C. Na Talang. “Boutique Hotel Management in Bangkok Tourism Management, College of Management Bangkok, University of Phayao”. Trends of Humanities and Social Sciences Research, vol. 10, no. 1, Mar. 2022, pp. 226-38, https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/255657.