Hasan 1967, tr. 176. Hasan, Yusuf Fadl (1967). The Arabs and the Sudan. From the seventh to the early sixteenth century. Edinburgh University. OCLC33206034.
Hasan 1967, tr. 162. Hasan, Yusuf Fadl (1967). The Arabs and the Sudan. From the seventh to the early sixteenth century. Edinburgh University. OCLC33206034.
Hasan 1967, tr. 128. Hasan, Yusuf Fadl (1967). The Arabs and the Sudan. From the seventh to the early sixteenth century. Edinburgh University. OCLC33206034.
Hasan 1967, tr. 133. Hasan, Yusuf Fadl (1967). The Arabs and the Sudan. From the seventh to the early sixteenth century. Edinburgh University. OCLC33206034.
Hasan 1967, tr. 134. Hasan, Yusuf Fadl (1967). The Arabs and the Sudan. From the seventh to the early sixteenth century. Edinburgh University. OCLC33206034.
Triulzi 1981, tr. 61. Triulzi, A. (1981). Salt, Gold and Legitimacy: prelude to the history of a no-man's land Bela Shangul, Wallagga, Ethiopia (1800–98). Istituto di Studi Orientale. OCLC10273177.
Triulzi 1981, tr. 66. Triulzi, A. (1981). Salt, Gold and Legitimacy: prelude to the history of a no-man's land Bela Shangul, Wallagga, Ethiopia (1800–98). Istituto di Studi Orientale. OCLC10273177.