OSWALD , M. .; PEROLD, M. . Doing reasonable hope within a cultural-historical activity framework. South African Journal of Higher Education, [S. l.], v. 25, n. 1, 2011. DOI: 10.20853/25-1-5469. Disponível em: https://www.journals.ac.za/sajhe/article/view/5469. Acesso em: 7 oct. 2025.