SWAN, Karen; BLOEMER, William; BOGLE, Leonard; DAY, Scott. DIGGING DEEPER INTO THE DATA: THE ROLE OF GATEWAY COURSES IN ONLINE STUDENT RETENTION. Online Learning, Boston, MA, v. 22, n. 4, 2019. DOI: 10.24059/olj.v22i4.1515. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1515. Acesso em: 27 mar. 2026.