Klumleantong, Mantana, and Porntep Khokhajaikiat. “Inventory Modeling for Spa Business: A Case Study of Phattaravadee Zenity Beauty and Spa”. Engineering and Applied Science Research 40, no. 1 (May 15, 2013): 57–66. Accessed May 18, 2024. https://ph01.tci-thaijo.org/index.php/easr/article/view/8567.