Kustomo, Heri. “FENOMENA SIKAP BERBAHASA DI INDONESIA”. Al Hikmah: Jurnal Studi Keislaman 1, no. 1 (March 1, 2011): 7. Accessed May 20, 2024. https://ejournal.kopertais4.or.id/pantura/index.php/alhikmah/article/view/322.