AKHMAD DZULFIQAR ILYAS. The Use of Duolingo Application to Improve Students’ Vocabulary Size at University Level. Vidhyayana - An International Multidisciplinary Peer-Reviewed E-Journal - ISSN 2454-8596, [S. l.], v. 8, n. 4, 2023. Disponível em: http://j.vidhyayanaejournal.org/index.php/journal/article/view/620. Acesso em: 14 nov. 2024.