Bibliography
Bibliography of Vitality:
1998. "1994 Population and Housing Census of Ethiopia, Results At Country Level." 1: Central Statistical Office. Online: https://www.msu.edu/~hudson/Ethlgslist.htm.
Bibliography of Locations:
Christa König. 2011. "Case Marking and Linguistic Geography." In Geographical Typology and Linguistic Areas: With Special Reference to Africa, edited by Osamu Hieda et al. 67-90. John Benjamins Publishing Company.
Bibliography of Context:
1998. "1994 Population and Housing Census of Ethiopia, Results At Country Level." 1: Central Statistical Office. Online: https://www.msu.edu/~hudson/Ethlgslist.htm.