ZUBIAUR ALEJOS, M. Ángel .; PADILLA CABALLERO, J. E. A. University tutoring: face-to-face or virtual: a systematic review. Espirales Revista Multidisciplinaria de investigación, [S. l.], v. 5, n. 37, p. 16–31, 2021. DOI: 10.31876/er.v5i37.790. Disponível em: https://www.revistaespirales.consultorioampuero.com/index.php/es/article/view/790. Acesso em: 22 apr. 2026.