OLIŃSKI, Marian. Corporate Social Responsibility Activities of Enterprises from the Warmia and Mazury Region. Equilibrium. Quarterly Journal of Economics and Economic Policy, Olsztyn, v. 6, n. 4, p. 65–78, 2011. DOI: 10.12775/EQUIL2011.029. Disponível em: https://economic-policy.pl/index.php/eq/article/view/394. Acesso em: 22 jan. 2026.