U. SILAS, N.; FAUSTIN, D. H.; MARIEN, D. N.; PAUL, D. M. J. Identification of possible strategies for implementing PBL at INES-Ruhengeri: A preliminary study. International Journal of Social Sciences and Humanities Invention, [S. l.], v. 5, n. 6, p. 4801–4807, 2018. DOI: 10.18535/ijsshi/v5i6.07. Disponível em: http://valleyinternational.net/index.php/theijsshi/article/view/1268. Acesso em: 8 may. 2024.