Chubchuwong, Montakan. “Factors Affecting Online Direct Hotel Booking: A Study in Bangkok”. APHEIT International Journal of Interdisciplinary Social Sciences and Technology 11, no. 1 (June 29, 2022): 32–47. accessed August 31, 2026. https://so04.tci-thaijo.org/index.php/ATI/article/view/256793.