Marcello. 1991. Cushitic and its classification. Anthropos 86(4/6):552-561. Zaborski, Andrzej. 1986. Can Omotic be reclassified as West Cushitic? In Gideon
(PDF). Work Papers of the Summer Institute of Linguistics, University of North Dakota Session. [18 Feb 2013]. (原始内容存档 (PDF)于2013-11-12). UNESCO Interactive