กิ่งแก้ว ร, โยธารักษ์ ด. Development of Health Tourism Management Model of Nakhon Si Thammarat. JST [internet]. 2019 Nov. 9 [cited 2026 Oct. 10];12(2):43-52. available from: https://so04.tci-thaijo.org/index.php/journal_sct/article/view/191033