Shalihah, Miftahush, and Muhammad Nurdin Zuhdi. “Language Politeness in students’ Text Messages Sent to the Lecturers through WhatsApp Application: A Sociopragmatic Study”. EnJourMe (English Journal of Merdeka) : Culture, Language, and Teaching of English 5, no. 2 (December 15, 2020): 134–148. Accessed February 5, 2025. https://jurnal.unmer.ac.id/index.php/enjourme/article/view/4926.