Gołda, Agnieszka. “The 100th Birth Anniversary of Karol Estreicher in Polish Publications in the Years 1927–1928”. Acta Universitatis Lodziensis. Folia Librorum 1, no. 24 (June 30, 2017): 11–28. Accessed December 17, 2025. https://czasopisma.uni.lodz.pl/librorum/article/view/2055.