Factors Related to Dropping Out in the Freshman and Sophomore Years in the Career of Teaching Mathematics at Universidad Nacional de Costa Rica. Revista Electrónica Educare, [S. l.], v. 20, n. 1, p. 1–23, 2016. DOI: 10.15359/ree.20-1.5. Disponível em: https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/7492.. Acesso em: 23 apr. 2025.