Prattana Punnakitikashem และ Nattapan Buavaraporn;Umaporn Wiwatreungdech. (2021) SPA MANAGEMENT AFTER THE COVID-19 PANDEMIC. <i>UTCC International Journal of Business and Economics</i>, <i>13</i>(2), 17-40.Prattana Punnakitikashem และ Nattapan Buavaraporn;Umaporn Wiwatreungdech. "SPA MANAGEMENT AFTER THE COVID-19 PANDEMIC". UTCC International Journal of Business and Economics 13 (2021):17-40.Prattana Punnakitikashem และ Nattapan Buavaraporn;Umaporn Wiwatreungdech. SPA MANAGEMENT AFTER THE COVID-19 PANDEMIC. University of the Thai Chamber of Commerce:ม.ป.ท. 2021.