MAHMOUD, D. S. S. The Smiling and the Frowning Face of the Facebook. International Journal of Social Sciences and Humanities Invention, [S. l.], v. 3, n. 9, 2016. Disponível em: https://valleyinternational.net/index.php/theijsshi/article/view/554. Acesso em: 13 jul. 2024.