Vorel, David, Jan Válek, Petr Sládek, und Jiří Šibor. „The Benefit of Professional Education on the Performance of Civil Servants“. R&E-SOURCE, no. s1 (Juni 15, 2023): 204–211. Zugegriffen Mai 10, 2024. https://journal.ph-noe.ac.at/index.php/resource/article/view/1204.