GŁUSZEK, E. CSR Maturity Model – Theoretical Framework. Journal of Corporate Responsibility and Leadership, [S. l.], v. 4, n. 3, p. 25–56, 2018. DOI: 10.12775/JCRL.2017.015. Disponível em: https://apcz.umk.pl/JCRL/article/view/JCRL.2017.015. Acesso em: 23 jan. 2022.