^İnalcık, Halil (1993). The Middle East and the Balkans under the Ottoman Empire : essays on economy and society. Bloomington: Indiana University Turkish Studies. p. 97. ISBN9781878318046.
^Leiser, Gary; Koprulu, Fuat (1992). Origins of the Ottoman Empire. p. 37. ISBN9781438410432.
^Ducas, Harry J. Magoulias, Ducas, 1975 , Decline and fall of Byzantium to the Ottoman Turks, p. 265, Wayne State University Press, University of Virginia ISBN0-8143-1540-2, ISBN978-0-8143-1540-8, The Germiyan were probably Kurdish and Turkish half-breeds who came from east of Malatya.
^Peter Malcolm Holt, 1986, The Age of the Crusades: the Near East from the eleventh century to 1517, p. 176, Longman, University of Michigan, ISBN0-582-49303-X, 9780582493032 The second of the eastern principalities, Germiyan, developed from a group, probably of mixed Kurdish and Turkish origin
^Marios Philippides, Biblioteca apostolica vaticana - 1990, Byzantium, Europe, and the early Ottoman sultans, 1373-1513: an anonymous Greek chronicle of the seventeenth century, p. 6, A.D. Caratzas, University of Michigan, ISBN0-89241-430-8, ISBN978-0-89241-430-7, Near Byzantine borders in Phrygia, the emirate of Germiyan was formed by a mixed population of Turks and Kurds, who had come from east of Malatya
^Carl F. Petry, 1998, The Cambridge History of Egypt, Vol. 1, p. 527, Cambridge University Press ISBN0-521-63313-3, ISBN978-0-521-63313-0, An Anatolian Turco-Kurdish dynasty, with its capital at Kutahya