Sopa, Pramote, Prakittiya Tuksino, and Pattrawadee Makmee. “The Appropriate Sample Size for Test Length on Estimating Item Parameters in Item Response Theory”. Journal of Research Methodology 36, no. 2 (June 22, 2023): 144–163. accessed April 9, 2025. https://so12.tci-thaijo.org/index.php/jrm/article/view/550.