MAŁŁEK, Janusz. Piotr Skarga as a problem in ecumenic dialogue of Protestants and a precursor of Tridentine-Catholic confessinalisation in Poland. Litteraria Copernicana. Online. 21 May 2015. Vol. 15, no. 1, pp. 40-51. [Accessed 6 July 2025]. DOI 10.12775/LC.2015.003.