Trefz, Bernhard. “Rezension Von: Königstein, Rolf, Alfred Dirr, NSDAP-Kreisleiter in Backnang”. Backnanger Jahrbuch 8 (2000): 219–220. Accessed March 13, 2026. https://journals.wlb-stuttgart.de/index.php/bjb/article/view/9054.