SEROJA BR GINTING, Rita; FITHRIANI, Rahmah. Using the Hello English Application in the EFL Classroom: Its Efficacy in Helping Students to Master Vocabulary. KnE Social Sciences, [S. l.], v. 5, n. 4, p. 592–600, 2021. DOI: 10.18502/kss.v5i4.8714. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/8714. Acesso em: 6 jun. 2025.