Seroka-Stolka , Oksana. “Environmental Corporate Social Responsibility (ECSR) in Polish Food Sector Enterprises from Częstochowa Region – Empirical Analysis”. Applied Studies in Agribusiness and Commerce, vol. 7, no. 4-5, Dec. 2013, pp. 101-5, https://doi.org/10.19041/APSTRACT/2013/4-5/14.