Pasaribu, Nianita, Enistatis Saota, & Hiace Vega Fernando Siahaan. " POLITENESS STRATEGIES IN ONLINE LEARNING OF STUDENTS IN FACULTY OF LETTERS DARMA AGUNG UNIVERSITY." JURNAL LITTERA: FAKULTAS SASTRA DARMA AGUNG [Online], 1.2 (2022): 58 - 77. Web. 23 Dec. 2024