Sigurðsson, Kjartan, Magdalena Wójcik-Jurkiewicz, and Paweł Zieniuk. “Voluntary Corporate Social Responsibility Reporting and Assurance Practices Among United Nations Global Compact Member Companies”. International Entrepreneurship Review 9, no. 4 (December 29, 2023): 21–34. Accessed April 1, 2025. https://ier.uek.krakow.pl/index.php/pm/article/view/2180.