“…Finally, the sustainability reporting in the public sector, regardless of the particular area approached or the choice of a reporting format, was mainly explained through the accountability concept [5,8,35,58,61,65] and specific theories, namely stakeholder [11,37,66], legitimacy [11,12,51,52,62] and institutional theory [12,51]. These results are consistent with prior literature [6,17], concluding that sustainability reporting evolved under high institutional pressure driven by both the desire to answer stakeholders' demand for greater accountability and transparency, and the willingness to meet their expectations for increasing legitimacy and reputation.…”