KUPCZYK, Alicja. Robert Biedroń’s success strategy in the election of the Mayor of the city of Słupsk in 2014. How to break the glass ceiling?. Civilization Rapprochements. Online. 31 March 2023. Vol. 19, no. 1, pp. 107-132. [Accessed 7 July 2025]. DOI 10.21784/ZC.2023.005.