Sadikin, Lisa, Nanik Mariani, Nasrullah Nasrullah, and Yusuf Arief. 2020. “Positive Politeness Strategies Implemented By The Lecturers Of Lambung Mangkurat University”. LINGUA EDUCATIA 2 (1), 1-13. https://jtam.ulm.ac.id/index.php/gej/article/view/365.