“Challenges of Second Language Acquisition: Error Analysis of Adult Learners in the Kazakh Case System (Based on Turkmen Learners)”. Eurasian Journal of Philology Science and Education 199, no. 3 (October 2, 2025): 241–252. Accessed July 14, 2026. https://philart.kaznu.kz/index.php/1-FIL/article/view/4874.