@Natalie
Cerulli, Burton & Paulitschke are all referenced by Mkuria he compares all foreign chronicles as well as medieval Sarsa Dengle’s and Portuguese chronicles!
Some Hararis online hate the book because they believe Selassie had an agenda against them which couldn't be further from the truth.
The author Tekletsadik was arrested in Xamar during Italys invasion of Ethiopia so he was a victim of Somalis in that sense. Both him and Selassie would have a bigger agenda against Somalis who ran their own country than some unknown Harari who think history being hidden from their tiny population poses a threat to the former Empire!