Rittidet, P., S. Pengtee, S. Dakaew, K. Namnai, and S. Chaipunha. “A Competency-Based Non-Degree Curriculum on Growing Safe Vegetables to Promote Smart Farmer Agriculture”. Journal for Developing the Social and Community, vol. 11, no. 1, Mar. 2024, pp. 81-104, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/275716.