TWIGG, Carol A. USING ASYNCHRONOUS LEARNING IN REDESIGN: REACHING AND RETAINING THE AT-RISK STUDENT. Online Learning, Boston, MA, v. 13, n. 3, 2019. DOI: 10.24059/olj.v13i3.1663. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1663. Acesso em: 1 apr. 2026.