Ployubon, Kantawut, Phechnoy Singchungchai, and Sawitri Limchaiarunruang. 2018. “Perceived Roles and Actual Roles of Health Personnel in Malaria Prevention and Control, Yala Province”. Journal of Health Science of Thailand 18 (2):242-50. https://thaidj.org/index.php/JHS/article/view/1676.