Amkid, Supidchaya. “A study of the Quantitative Criteria in Chinese Proficiency Grading Standards for International Chinese Language Education through the Four-dimension benchmarks”. Humanities and Social Sciences Nakhonsawan Rajabhat University Academic Journal 9, no. 1 (July 1, 2022): 30–44. accessed September 21, 2026. https://so05.tci-thaijo.org/index.php/hssnsru/article/view/254998.