Ishikawa, Shin’ichiro. “Quantitative Reconsideration of an L1 Effect on Asian Learners’ L2 English Writing: A Study Based on the ICNALE”. LEARN Journal: Language Education and Acquisition Research Network 18, no. 1 (January 31, 2025): 989–1014. accessed August 27, 2026. https://so04.tci-thaijo.org/index.php/LEARN/article/view/277631.