KURTHEN, H.; SMITH, G. Threshold Effects in Hybrid and Blended Online Classes. TRAILS: Teaching Resources and Innovations Library for Sociology, Washington DC: American Sociological Association., 2010. Disponível em: https://trails.asanet.org/article/view/threshold-effects-in-hybrid-and-blended-online. Acesso em: 19 apr. 2024.