Martínez d'Alòs-Moner, A. John Jeremy Hespeler-Boultbee: A Story in Stones: Portugal’s Influence on Culture and Architecture in the Highlands of Ethiopia 1493–1634. Aethiopica 2008, 11 (1), 254-258. https://doi.org/10.15460/aethiopica.11.1.168.