Nurhamsih, Yeli, and Syahrial Syahrial. “Evaluation of English Teaching Materials Used at a Vocational High School Based on Cunningsworth’s Checklist”. JOALL (Journal of Applied Linguistics and Literature) 3, no. 2 (February 12, 2019): 33–46. Accessed February 10, 2025. https://ejournal.unib.ac.id/joall/article/view/6830.