Abdulsamed HA (1977). "Bure - A Study of Long Distance Trade 1900 - 1935." B.A.Thesis. Addis Abeba University.

Abera J (1985). Ye Sir Betu Abessa Be Talaqu Betemengest ("The Misfortune of the Prison House in the Great Palace"): 1966-1974 E.C. Addis Abeba.

Bahru Z (2005). A History of Modern Ethiopia: 1855-1991. Second Edition. Addis Ababa: Addis Abeba University Press.

Clapham C (1969). Haile Sellase's Ethiopia. New York: Praeger.

Fentahun E (2000). Tarikawi Mezgaba-Sab: Ka Tinant Eska Zare (" A Historical Dictionary: from Past to Present"). Addis Ababa.

Fikre-Selassie W (2006). Egna na Abiotu ("Us and The Revolution"). Los Angeles: TSEAHI Publishers.

Girma A (2004). Addis Alemayehu (1910-2003). In Int. J. Ethiopian Stud. 1(2).

Greenfield RA (1965). Ethiopia: A New Political History. New York: Fredrick A. Preager.

Haddi A (1966). Ytyopia Min Ayinet Astedader Yasfelgatal ("What Type of Government Ethiopia Needs?"). Addis Abeba: Birhanena Salam Printing Press.

Haddi A (1985). Tezetta ("Memory"). Addis Abeba: Kuraz Publishing Agency. "Leyu Mastawesha" ("Special Note"). Tir 23, 1953 E.C. (Obtained in Haddis's Home in1998).

Markakis J (1974). Ethiopia: Anatomy of Traditional Polity. Addis Abeba: Oxford University Press.

Mesfin Wolde-Mariam. (1964). The Background of the Ethio- Somalia Boundary Dispute. Addis Abeba: Haile Selassie I University.

Molvaer R (1996). Black Lions: the Creative Lives of Modern Ethiopia's Literary Giants and Pioneers. Lawrenceville, NJ: Red Sea Press.

Spencer JH (1984). Ethiopia At Bay: A Personal Account of the Haile Sellase Years. Algonac, Michigan.

Tsegaye H (1987). "Haddis Alemayhu as a Social Critic." M.A.Thesis in Literature (English). Addis Abeba University.