Nonbhakkathawat Kriratiphiphatkorn น. ก. “Comparison Study of Employee’ Satisfaction of Housekeeping Division and Front Office Division in 5 - Star Hotels, Bangkok Metropolitan Area”. Dusit Thani College Journal, vol. 12, no. Special, June 2018, pp. 19-35, https://so01.tci-thaijo.org/index.php/journaldtc/article/view/129074.