ULLY, Rita Marlina; KROON, Yosep B.; HAAN, John Wem; LATUPEIRISSA, David S. English grammar proficiency among indonesian postgraduate students: Identifying areas for improvement. The International Journal of Social Sciences World (TIJOSSW), [S. l.], v. 6, n. 1, p. 263–279, 2024. Disponível em: https://www.growingscholar.org/journal/index.php/TIJOSSW/article/view/454. Acesso em: 3 nov. 2026.