VIGNARE, Karen; GEITH, Christine; SCHIFFMAN, Stephen. BUSINESS MODELS FOR ONLINE LEARNING: AN EXPLORATORY SURVEY. Online Learning, Boston, MA, v. 10, n. 2, 2019. DOI: 10.24059/olj.v10i2.1764. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1764. Acesso em: 25 mar. 2026.