Andrew Mango Atatürk: The Biography of the Founder of Modern Turkey, Overlook Press, 2002, ISBN978-1-58567-334-6, pp. 25–27Archived 23 April 2023 at the Wayback Machine., pp. 27ff. – "Feyzullah's family is said to have come from the country near Vodina (now Edhessa in western Greek Macedonia). The surname Sofuzade, meaning 'son of a pious man', suggests that the ancestors of Zübeyde and Ali Rıza had a similar background. Cemil Bozok, son of Salih Bozok, who was a distant cousin of Mustafa Kemal and, later, his ADC, claims to have been related to both Ali Rıza's and Zübeyde's families. This would mean that the families of Mustafa Kemal's parents were interrelated. Cemil Bozok also notes that his paternal grandfather, Safer Efendi, was of Albanian origin. This may have a bearing on the vexed question of Mustafa Kemal's ethnic origin. Mustafa Kemal's parents and relatives all used Turkish as their mother tongue. This suggests that some at least of their ancestors had originally come from Turkey, since local Muslims of Albanian and Slav origin who had no ethnic connection with Turkey spoke Albanian, Serbo-Croat or Bulgarian, at least so long as they remained in their native land.But in looks Atatürk resembled local Albanians and Slavs.[...] But there is no evidence that either Ali Riza or Zübeyde was descended from such Turkish nomads." page 28; "It is much more likely that Atatürk inherited his looks from his Balkan ancestors.[...] But Albanians and Slavs are likely to have figured among his ancestors."
Zadrożna, Anna (31 July 2017). “Reconstructing the past in a post-Ottoman village: Turkishness in a transnational context”. Nationalities Papers45 (4): 530. doi:10.1080/00905992.2017.1287690.
Andrew Mango Atatürk: The Biography of the Founder of Modern Turkey, Overlook Press, 2002, ISBN978-1-58567-334-6, pp. 25–27Archived 23 April 2023 at the Wayback Machine., pp. 27ff. – "Feyzullah's family is said to have come from the country near Vodina (now Edhessa in western Greek Macedonia). The surname Sofuzade, meaning 'son of a pious man', suggests that the ancestors of Zübeyde and Ali Rıza had a similar background. Cemil Bozok, son of Salih Bozok, who was a distant cousin of Mustafa Kemal and, later, his ADC, claims to have been related to both Ali Rıza's and Zübeyde's families. This would mean that the families of Mustafa Kemal's parents were interrelated. Cemil Bozok also notes that his paternal grandfather, Safer Efendi, was of Albanian origin. This may have a bearing on the vexed question of Mustafa Kemal's ethnic origin. Mustafa Kemal's parents and relatives all used Turkish as their mother tongue. This suggests that some at least of their ancestors had originally come from Turkey, since local Muslims of Albanian and Slav origin who had no ethnic connection with Turkey spoke Albanian, Serbo-Croat or Bulgarian, at least so long as they remained in their native land.But in looks Atatürk resembled local Albanians and Slavs.[...] But there is no evidence that either Ali Riza or Zübeyde was descended from such Turkish nomads." page 28; "It is much more likely that Atatürk inherited his looks from his Balkan ancestors.[...] But Albanians and Slavs are likely to have figured among his ancestors."