↑Michael Hodd, East Africa Handbook, 7th Edition, (Passport Books: 2002), p. 21: "To the north are the countries of the Horn of Africa comprising Ethiopia, Eritrea, Djibouti and Somalia."
↑Encyclopædia Britannica, inc, Jacob E. Safra, The New Encyclopædia Britannica, (Encyclopædia Britannica: 2002), p.61: "The northern mountainous area, known as the Horn of Africa, comprises Djibouti, Ethiopia, Eritrea, and Somalia."