RUBY, Alan; PERNA, Laura; BORUCH, Robert; WANG, Nicole. Are There Metrics for MOOCS From Social Media?. Online Learning, Boston, MA, v. 19, n. 5, 2015. DOI: 10.24059/olj.v19i5.567. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/567. Acesso em: 25 mar. 2026.