PIETARINEN, A.-V. Signs systematically studied: Invitation to Peirce’s theory. Sign Systems Studies, [S. l.], v. 43, n. 4, p. 372–398, 2015. DOI: 10.12697/SSS.2015.43.4.01. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/SSS.2015.43.4.01. Acesso em: 2 may. 2024.