Sari D. MEASURING QUALITY OF READING MATERIALS IN ENGLISH TEXTBOOK: THE USE OF LEXICAL DENSITY METHOD IN ASSESSING COMPLEXITY OF READING MATERIALS OF INDONESIA’S CURRICULUM – 13 (K13) ENGLISH TEXTBOOK Dian Sari. J. appl. linguist. lit. [Internet]. 2018 Mar. 11 [cited 2024 May 2];1(2):30-9. Available from: https://ejournal.unib.ac.id/joall/article/view/4177