Fitri FR, Sari IP, Sormin RK, Susiani S. The Cooperative Principles For The Class-room Conversation of Semester III Students of Imformatics Management Department at STIKOM Tunas Bangsa Pematangsiantar. JPDK [Internet]. 2023Jun.20 [cited 2024Nov.22];5(3):350-5. Available from: http://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/15689