OLSON, Joann S.; MCCRACKEN, Fawn E. Is It Worth the Effort? The Impact of Incorporating Synchronous Lectures into an Online Course. Online Learning, Boston, MA, v. 19, n. 2, 2014. DOI: 10.24059/olj.v19i2.499. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/499. Acesso em: 25 mar. 2026.