DELVIA FIRDIANTI F. ANALYSIS OF THE READING MATERIALS IN TEXTBOOK “ENGLISH IN FOCUS” ENGLISH FOR THE NINTH GRADERS OF JUNIOR HIGH SCHOOL PUBLISHED BY NATIONAL EDUCATION DEPARTMENT. RT [Internet]. 15Aug.2013 [cited 19May2024];1(3). Available from: https://ejournal.unesa.ac.id/index.php/retain/article/view/3781