TAMIRU, T. . Substance Use and Feelings of Self-determination of Summer Students at Bahir Dar University. The Ethiopian Journal of Education, [S. l.], v. 34, n. 2, p. 1–27, 2021. Disponível em: https://ejol.aau.edu.et/index.php/EJE/article/view/193. Acesso em: 4 apr. 2025.