Kaewnumsai, K. “The unit cost analysis of dengue prevention and control services at Chokchai Hospital, Nakhon Ratchasima Province”. Journal of the Office of Disease Prevention and Control 9 Nakhon Ratchasima, vol. 29, no. 2, May 2023, pp. 54-66, https://he02.tci-thaijo.org/index.php/ODPC9/article/view/259211.