Photangtham, Darin, Hathaichanok Buajaroen, Peeranun Wisansakunwong, and Wariya Chankhum. 2024. “Safety Elevation for Spa Business Operators After COVID-19 Pandemic in Nakhon Pathom and Phetchaburi Province”. Modern Management Journal 21 (2):88-104. https://so04.tci-thaijo.org/index.php/stou-sms-pr/article/view/267701.