HERTSLET, Edward. The Map of Europe by Treaty. Londýn: Her Majesty's Stationery Office, 1891. 3380 s. Dostupné online. Kapitola Act agreed between the Plenipotentiaries of Great Britain, Austria-Hungary, France, Germany, Italy, Russia, and Turkey, for modifying Articles XV and XVII of the Treaty of Berlin; Governor-Generalship of Eastern Rumelia to be entrusted to the Prince of Bulgaria, and Musulman Villages of Kirdjali and those of Rhodope District to be placed under administration of the Porte, Constantinople, 5th April 1886, s. 3152–3157. (anglicky)
DETREZ, Raymond. Historical Dictionary of Bulgaria. Londýn: Scarecrow Press, 1997. 466 s. Dostupné online. ISBN0-8108-3177-5. S. 437. (anglicky)
sudigital.org
lib.sudigital.org
RADEV, Simeon. Строителите на съвременна България. Sofie: Български писател, 1990. 839 s. Dostupné online. ISBN9789549384123. S. 722–723, 728–730, 745. (bulharsky)