ACHMAD, P. F. .; MUKRIM, M.; ANGGRENI, A. THE USE OF DUOLINGO APPS TO IMPROVE STUDENTS’ VOCABULARY MASTERY OF SMP NEGERI 4 PALU. e-Journal of ELTS (English Language Teaching Society), [S. l.], v. 13, n. 1, p. 1027-1034, 2025. DOI: 10.22487/elts.v13i1.4456. Disponível em: https://jurnalfkipuntad.com/index.php/elts/article/view/4456. Acesso em: 22 jun. 2025.