Kondratowicz-Pietruszka, Elżbieta, and Joanna Białek. 2015. “The Contemporary Oil Market With a Focus on Plant Oil Trading”. Krakow Review of Economics and Management Zeszyty Naukowe Uniwersytetu Ekonomicznego W Krakowie, no. 918 (December): 51-69. https://doi.org/10.15678/krem.721.