REVERTE MAYA, Carmelo. Valuation of the assurance of non-financial information by the Spanish market. Revista de Contabilidad y Tributación. CEF, [S. l.], n. 440, p. 159–194, 2019. DOI: 10.51302/rcyt.2019.4007. Disponível em: https://revistas.cef.udima.es/index.php/RCyT/article/view/4007. Acesso em: 19 may. 2024.