Azzahra, S. et al. 2024. Text Complexity in Digital Language Learning: Analyzing the Readability and Lexical Density of Duolingo’s Guidance Textbook. Lexeme : Journal of Linguistics and Applied Linguistics. 7, 1 (Dec. 2024), 29–36. DOI:https://doi.org/10.32493/ljlal.v7i1.44985.