ZULIO DIVA ANANTA; WANDA RIANI HASIBUAN; YANI LUBIS. The Students Challenges in Learning Difthong. Jurnal Nakula : Pusat Ilmu Pendidikan, Bahasa dan Ilmu Sosial, [S. l.], v. 3, n. 2, p. 44–49, 2025. DOI: 10.61132/nakula.v3i2.1603. Disponível em: https://journal.aripi.or.id/index.php/Nakula/article/view/1603. Acesso em: 23 jan. 2025.