อ่อนจันทร์ สุประวีณ์. (2021) 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):103-23. https://so04.tci-thaijo.org/index.php/johuru/article/view/253987.