Coon, Carleton Stevens (1939). The Races of Europe. New York: The Macmillan Company. str. 400–401. »This third racial zone stretches from Spain across the Straits of Gibraltar to Morocco, and thence along the southern Mediterranean shores into Arabia, East Africa, Mesopotamia, and the Persian highlands; and across Afghanistan into India[...] The Mediterranean racial zone stretches unbroken from Spain across the Straits of Gibraltar to Morocco, and thence eastward to India[...] A branch of it extends far southward on both sides of the Red Sea into southern Arabia, the Ethiopian highlands, and the Horn of Africa.«
Smay, Diana and Armelagos, George. Emory University. "Galileo Wept: A Critical Assessment of the Use of Race in Forensic Anthropology" [1]Arhivirano 2018-08-18 na Wayback Machine-u
Jennifer K. Wagner, Joon‐Ho Yu, Jayne O. Ifekwunigwe, Tanya M. Harrell, Michael J. Bamshad, Charmaine D. Royal (Veljača 2017.). „Anthropologists' views on race, ancestry, and genetics”. American Journal of Physical Anthropology162 (2): 318–327. 10.1002/ajpa.23120. Pristupljeno 2021-01-15.
Smay, Diana and Armelagos, George. Emory University. "Galileo Wept: A Critical Assessment of the Use of Race in Forensic Anthropology" [1]Arhivirano 2018-08-18 na Wayback Machine-u