Erlikh, Ḥ. (1973). A political biography of Ras Alula, 1875-1897. University of London.
Čikaški stil citiranja (17. izdanje)Erlikh, Ḥagai. A Political Biography of Ras Alula, 1875-1897. University of London, 1973.
MLA način citiranja (8. izdanje)Erlikh, Ḥagai. A Political Biography of Ras Alula, 1875-1897. University of London, 1973.
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