Khumhaeng, Supatra, and Suthikan Keawkhongbun. 2022. “Marketing Communication Strategies to Promote Health Tourism in Nakhon Si Thammarat Province”. Princess of Naradhiwas University Journal of Humanities and Social Sciences 9 (1):114-32. https://so05.tci-thaijo.org/index.php/pnuhuso/article/view/252436.