[1]
M. K. . Hasan, R. . Zengin, M. . Basmaz, M. T. . Hossain, M. S. . Hoque, and M. G. . Mohiuddin, “Lexical Diversity, Density, and Word Frequency in CEFR A2 ELT Coursebook Reading Texts in Turkish Higher Education: A Corpus-Based Comparative Analysis of Three Coursebooks”, IJLTER, vol. 25, no. 5, pp. 734–755, May 2026.