Sari N. INSTRUCTIONAL ENGLISH READING MATERIALS USED BY TEACHER AT GRADE X SMKN I PANGKALAN KOTO BARU 50 KOTA REGENCY. J. Educative: J. Educ. Stud. [Internet]. 2016 Jun. 21 [cited 2025 Oct. 27];1(1):61-7. Available from: https://ejournal.uinbukittinggi.ac.id/index.php/educative/article/view/124