“…Most CSR reports are published following the guidelines issued by the Global Reporting Initiative (GRI, ). Indeed, many studies have analysed how companies follow them on a voluntary basis to issue a sustainability report (Hassan and Ibrahim, ), and the impact of this impact on company performance and market value (Carnevale et al , , Carnevale and Mazzuca, ), information asymmetries and capital constraints (Cheng et al , ) or firm reputation (Maignan, ). Some companies provide external assurance to these reports as a way of enhancing credibility, following the voluntary standards set by the International Federation of Accountants (IFAC) and AccountAbility (IAASB, ; AccountAbility, ; Belal, ; Zorio et al, ).…”