Jariya, W., and V. Kuruchittham. “Effectiveness of Participatory Learning Program on Pesticide Utilization among Agriculturists in Srinakorn District, Sukhothai Province”. Journal of Health Research, vol. 21, no. 3, Nov. 2018, pp. 215-8, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/154139.