JURICEVIC, Igor; KENNEDY, John M. Natural, Artifactual, and Evolutionary Perspective. Public Journal of Semiotics, [S. l.], v. 2, n. 1, p. 37–52, 2008. DOI: 10.37693/pjos.2008.2.8824. Disponível em: https://journals.lub.lu.se/pjos/article/view/8824. Acesso em: 4 may. 2024.