MOSKWA-BĘCZKOWSKA, Daria. Case study of cost efficiency in selected business entities in Poland in light of current economic conditions. Ekonomia i Prawo. Economics and Law. Online. 31 December 2023. Vol. 22, no. 4, pp. 715-728. [Accessed 8 July 2025]. DOI 10.12775/EiP.2023.038.