ZUMRAH, Z.; MANURUNG, K. A STUDY ON THE USE OF SUBSTITUTION DRILL TECHNIQUE IN TEACHING GRAMMAR. e-Journal of ELTS (English Language Teaching Society), [S. l.], v. 9, n. 3, p. 297-305, 2022. DOI: 10.22487/elts.v9i3.1885. Disponível em: https://jurnalfkipuntad.com/index.php/elts/article/view/1885. Acesso em: 26 jul. 2025.