Gwardyński, Robert, and Barbara Kaczmarczyk. “Assessment of the Efficiency of Preventive Measures Undertaken by the Police in Poland.”. Scientific Journal of Bielsko-Biala School of Finance and Law 23, no. 3 (October 10, 2019): 42-47. Accessed May 17, 2022. https://asej.eu/index.php/asej/article/view/379.