Syper-Jędrzejak, Marzena. “Dysfunctions in Promotions Managers from Lodz Comapanies on the Selected Examples”. Acta Universitatis Lodziensis. Folia Oeconomica, no. 288 (January 1, 2013): 153–161. Accessed February 8, 2026. https://www.czasopisma.uni.lodz.pl/foe/article/view/28080.