AMIN, Sausan nafis. GAMIFICATION OF DUOLINGO IN RISING STUDENT’S ENGLISH LANGUAGE LEARNING MOTIVATION. Jurnal Bahasa Lingua Scientia, [S. l.], v. 13, n. 2, p. 191–213, 2021. DOI: 10.21274/ls.2021.13.2.191-213. Disponível em: https://ojstrial.uinsatu.ac.id/index.php/ls/article/view/3972. Acesso em: 5 nov. 2025.