Nanda MRD, Harahap A, Damayanti I. An Analysis of Language Skills’ Proportion in the English Textbook Grade XII Published by Kemendikbud 2014. JEET [Internet]. 2019 Dec. 6 [cited 2024 Apr. 28];3(4):438-51. Available from: https://ejournal.unib.ac.id/JEET/article/view/8335