MCCARROLL, Julie; HARTWICK, Peggy. Facilitating Cognitive Presence Online: Perception and Design. Online Learning, Boston, MA, v. 26, n. 2, 2022. DOI: 10.24059/olj.v26i2.3056. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/3056. Acesso em: 29 mar. 2026.