MORENO, Justo de Jorge. Using social network and dropbox in blended learning: an application to university education. Business, Management and Economics Engineering, [S. l.], v. 10, n. 2, p. 220–231, 2012. DOI: 10.3846/bme.2012.16. Disponível em: https://journals.vilniustech.lt/index.php/BMEE/article/view/4669. Acesso em: 21 may. 2025.