M. Knüppel, “Sinan Kuneralp (ed.): The secret reports of the Hungarian Arminius Vambery to the British Foreign Office on Sultan Abdulhamid II and his reign (1889–1909)”, ZfB, vol. 52, no. 2, Jan. 2017, Accessed: Oct. 16, 2026. [Online]. Available: https://zeitschrift-fuer-balkanologie.de/index.php/zfb/article/view/478