KAISER-MÜLLER, K. SID 2020: Am 12. Februar 2020 ist Safer Internet Day. Medienimpulse, [S. l.], v. 57, n. 4, p. 3, 2019. Disponível em: https://journals.univie.ac.at/index.php/mp/article/view/3284. Acesso em: 27 juni. 2022.