Reverte Maya, Carmelo. “Valuation of the Assurance of Non-Financial Information by the Spanish Market”. Revista de Contabilidad y Tributación. CEF, no. 440 (November 7, 2019): 159–194. Accessed May 19, 2024. https://revistas.cef.udima.es/index.php/RCyT/article/view/4007.