Sudar, Sudar. “SPEECH FUNCTION BY LECTURERS AND STUDENTS IN THE COMMUNICATION USING WHATSAPP: SOCIOPRAGMATICS STUDY”. English Review: Journal of English Education 12, no. 1 (January 31, 2024): 105-116. Accessed July 24, 2026. https://journal.uniku.ac.id/index.php/ERJEE/article/view/8812.