Luthfianda, Sahira, Yusup Irawan, Ratih Rahayu, and Sarip Hidayat. “EXPLORING PRONUNCIATION CHALLENGES: INDONESIAN UNIVERSITY STUDENTS’ PRODUCTION OF ENGLISH FRICATIVE SOUNDS”. English Review: Journal of English Education 12, no. 1 (February 3, 2024): 85-94. Accessed July 24, 2026. https://journal.uniku.ac.id/index.php/ERJEE/article/view/7606.