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), pp. 103–123. Available at: https://so04.tci-thaijo.org/index.php/johuru/article/view/253987 (Accessed: 19 May 2024).