Haile, Semere (1987). „The Origins and Demise of the Ethiopia-Eritrea Federation“. Issue. Issue: A Journal of Opinion, Vol. 15. 15: 9. doi:10.2307/1166919. JSTOR1166919.
jstor.org
Haile, Semere (1987). „The Origins and Demise of the Ethiopia-Eritrea Federation“. Issue. Issue: A Journal of Opinion, Vol. 15. 15: 9. doi:10.2307/1166919. JSTOR1166919.