VILLANUEVA, J. A. R. Teaching Presence in K-12 Blended Learning Classes under the Alternative Delivery Mode. International Journal on Open and Distance e-Learning, [S. l.], v. 7, n. 1, 2021. Disponível em: https://ijodel.upou.edu.ph/ijodel/article/view/33. Acesso em: 18 apr. 2025.