Vebri Filiandi, Dina Yulpiani, Muti Amanda Chairiyah, Lasenna Siallagan, Ranap Fransiskus Togatorop, and Yenni Enjelina Simatupang. “Analysis of Language Politeness of Medan State University Physics Students”. Jurnal Ilmiah Pendidikan Holistik (JIPH) 3, no. 2 (April 29, 2024): 69–80. Accessed June 3, 2026. https://journal.formosapublisher.org/index.php/jiph/article/view/9803.