Tafla, Bairu. “Peter P. Garretson: A History of Addis Abäba from Its Foundation in 1886 to 1910”. Aethiopica 5, no. 1 (July 9, 2002): 252–254. Accessed July 3, 2024. https://journals.sub.uni-hamburg.de/aethiopica/article/view/466.