DELVIA FIRDIANTI, F. (2013). ANALYSIS OF THE READING MATERIALS IN TEXTBOOK “ENGLISH IN FOCUS” ENGLISH FOR THE NINTH GRADERS OF JUNIOR HIGH SCHOOL PUBLISHED BY NATIONAL EDUCATION DEPARTMENT. RETAIN : Journal of Research in English Language Teaching, 1(3). Retrieved from https://ejournal.unesa.ac.id/index.php/retain/article/view/3781