UBELL, Robert. EXTENDING ONLINE AND BLENDED LEARNING TO CORPORATIONS IN THE NEW YORK METROPOLITAN REGION. Online Learning, Boston, MA, v. 11, n. 1, 2019. DOI: 10.24059/olj.v11i1.1733. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1733. Acesso em: 25 mar. 2026.