The Invisible Guardian, a multimodal proposal for elementary school students. XXI Century. Spanish Literature and Culture, [S. l.], n. 21, p. 473–502, 2023. DOI: 10.24197/sxxi.21.2023.473-502. Disponível em: https://revistas.uva.es/index.php/sigloxxi/article/view/8245. Acesso em: 24 nov. 2025.