KHOIRUNNISA, K.; SUPRIYONO, S. Boosting Students Grammar Achievement Applying Johnny Grammar Word Challenge Application In Senior High School. Cendikia: Jurnal Pendidikan dan Pengajaran, [S. l.], v. 2, n. 11, p. 80–82, 2024. Disponível em: https://jurnal.kolibi.org/index.php/cendikia/article/view/3717. Acesso em: 6 may. 2026.