Zahid, Indirawati. “Ketamadunan Bangsa Dan Kesantunan Berbahasa: Civilization of Nations and Language Politeness”. International Journal of Language Education and Applied Linguistics 13, no. 2 (November 8, 2023): 1–6. Accessed May 13, 2024. https://journal.ump.edu.my/ijleal/article/view/9928.