Agusta, Okky Leo. “CHALLENGES IN ENGLISH MATERIALS EVALUATION: LOCALLY, NATIONALLY, AND GLOBALLY”. Global Expert: Jurnal Bahasa dan Sastra 10, no. 2 (January 2, 2023): 42–46. Accessed December 21, 2024. https://ejournal.uigm.ac.id/index.php/GE/article/view/2616.