Noviarini, Tiara, and Yulianto. “ANALYSIS OF POLITENESS CONVERSATION AMONG TEACHER AND STUDENT IN WHAT’S APP APPLICATION”. IJLECR (International Journal of Language Education and Cultural Review) 5, no. 2 (December 31, 2019): 131-136. Accessed April 20, 2024. https://journal.unj.ac.id/unj/index.php/ijlecr/article/view/10852.