Mahmud, M. and 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), pp. 17–27. doi: 10.33394/jk.v7i1.2909.