SRI ASTUTI NASIR; ROSTINA; ISWARDHANI, I.; WINDARSARI, W. R.; SANDIRA, N. F. A. TOEFL Essentials: Effective Training to Master Grammar and Structure for Students. Abdi Cendekia : Jurnal Pengabdian Masyarakat, [S. l.], v. 4, n. 1, p. 342–347, 2025. DOI: 10.61253/abdicendekia.v4i1.312. Disponível em: https://zia-research.com/index.php/abdicendekia/article/view/312. Acesso em: 13 mei. 2026.