ROHELI, R.; RAHAYU, D. A.; MARCHA, F.; DARMAYANTO, D. Implementation of Android-Based English Application System as Learning Tool for 6-12 Years Old Due to Covid-19. Journal of Research and Investigation in Education , [S. l.], v. 1, n. 1, p. 7–11, 2023. DOI: 10.37034/residu.v1i1.4. Disponível em: https://residu.org/index.php/residu/article/view/4. Acesso em: 18 aug. 2025.