The Sultan and the palace in the cultural transformation of Zanzibar, 1840-1920 - Sadgrove, Philip C. (al-Mu’tamar al-Duwalī : al-Dawr al-ʿUmānī fī ‘l-Sharq al-Ifrīqī, 11-13 Dec. 2012. Buḥūth al-Mu’tamar, 2014)