Eko Suwignyo, Dwi Rukmini, Rudi Hartono and Hendi Pratama (2022) “Impoliteness Strategies in Efl Context: Teacher – Student Interaction in English for Specific Purposes (Esp) Class”, International Conference on Science, Education, and Technology, 8(1), pp. 563–567. Available at: https://proceeding.unnes.ac.id/ISET/article/view/1805 (Accessed: 16 May 2024).