Keawzang, Uthorn. “Logistics system development to enhance competitiveness for Herbal products Case Study: Southern Gulf of Thailand Provincial Cluster Chumphon, Surat Thani, Nakhon Si Thammarat and Phatthalung”. Journal of Buddhist Anthropology 6, no. 4 (April 26, 2021): 39–50. accessed April 6, 2025. https://so04.tci-thaijo.org/index.php/JSBA/article/view/249850.