วลัยเสถียร จ., M. P. . Prasong, and M. . Nakprakob. “Health Literacy of Personnel in Prevention and Control of Non-Communicable Diseases of the Office of Disease Prevention and Control 9 Nakhon Ratchasima”. The Office of Disease Prevention and Control 9th Nakhon Ratchasima Journal, vol. 27, no. 1, Jan. 2021, pp. 46-55, https://he02.tci-thaijo.org/index.php/ODPC9/article/view/245235.