Čapská, Veronika. “Johann Christian of Swéerts-Sporck and Franz Girtler − Together on a Journey Between Piety and Economic Interest”. Theatrum historiae, no. 9 (April 9, 2012): 79–96. Accessed May 9, 2024. https://theatrum.upce.cz/index.php/theatrum/article/view/1950.