Tapparit Jitjak และ Yaowaret Tharawoot;Watcharee Paisart. (2021) Foreign Passengers’ Satisfaction of Thai Ground Staff’s English Oral Communication Ability and Brand Loyalty of a Thai Airline. <i>Journal of Liberal Arts, Prince of Songkla University</i>, <i>13</i>(2), 66-88.Tapparit Jitjak และ Yaowaret Tharawoot;Watcharee Paisart. "Foreign Passengers’ Satisfaction of Thai Ground Staff’s English Oral Communication Ability and Brand Loyalty of a Thai Airline". Journal of Liberal Arts, Prince of Songkla University 13 (2021):66-88.Tapparit Jitjak และ Yaowaret Tharawoot;Watcharee Paisart. Foreign Passengers’ Satisfaction of Thai Ground Staff’s English Oral Communication Ability and Brand Loyalty of a Thai Airline. Faculty of Liberal Arts, Prince of Songkla University:ม.ป.ท. 2021.