Mahmud, M., & Linda, L. (2021). Designing English Coursebook for Islamic Bilingual Boarding School Based on the Value of the Four Pillars of Nationality. Jurnal Kependidikan: Jurnal Hasil Penelitian Dan Kajian Kepustakaan Di Bidang Pendidikan, Pengajaran Dan Pembelajaran, 7(1), 17–27. https://doi.org/10.33394/jk.v7i1.2909