OGI , A. I. .; PONGOH, E. .; TUMBEL, F. . Development of Powtoon-Based Learning Media On Class VII Environmental Pollution Materialat Junior High School Brother Don Bosco Tomohon. Web of Semantic: Universal Journal on Innovative Education, [S. l.], v. 2, n. 6, p. 156–165, 2023. Disponível em: https://univerpubl.com/index.php/semantic/article/view/2020. Acesso em: 20 dec. 2024.