อ่อนจันทร์ ส. (2022). Development Rice Database System of Ontology for Learning Process for Organic Farmer in Uttaradit Province. Journal of Humanities and Social Sciences Uttaradit Rajabhat University, 8(2), 103–123. Retrieved from https://so04.tci-thaijo.org/index.php/johuru/article/view/253987 (Original work published December 30, 2021)