1. Aasebø-Rønne, F. (1997). The Scramble for Southern Ethiopia. Sammenstød mellem Protestantiske Missionsselskaber i Etiopien, Mission og teologi, 4, 34-55.
2. Antonius Alberto. (2013). A Modern and Contemporary History of the Catholic Church in Ethiopia (16th-20th Centuries). Ethiopian Review of Cultures 6. Capuchin Franciscan Institute of Philosophy and Theology: Addis Ababa.
3. Bahru Zewde. (2004). The Changing Fortune of the Amharic Language: Lingua Franca or Instrument of Domination? In V. Böll, D. Nosnitsin, T. Rave, W. Schmidt & E. Sokolinskaia (Eds.). Studia Aethiopica. In Honour of Siegbert Uhlig on the Occasion of his 65th Birthday, Harrassowitz Verlag: Wiesbaden, 303-318.
4. Bairu Tafla. (1969). Four Ethiopian Biographies: Däjjazmač Gärmamé, Däjjazmač Gäbrä Egzi’abehér Moroda, Däjjazmač Balča and Käntiba Gäbru Dästa, Journal of Ethiopian Studies, 7(2), 1–31. [Available online at https://www.jstor.org/stable/41965786].
5. Bakke, J. (1987). Christian Ministry. Patterns and Functions within the Ethiopian Evangelical Church Mekane Yesus. Solum Forlag: Oslo.