CULL, Mary; WALKER, Robyn. Moments of truth: Managing the face-to-face encounter in distance learning. Journal of Open, Flexible and Distance Learning, [S. l.], v. 1, n. 1, p. 24–31, 2012. Disponível em: https://jofdl.nz/index.php/JOFDL/article/view/177. Acesso em: 24 apr. 2026.