↑ Fleming, Harold C. (1968), "Ethiopic Language History: Testing Linguistic Hypotheses in an Archaeological and Documentary Context" in Ethnohistory, Vol. 15, No. 4 (Autumn), pp. 353-388
↑ Ehret, Christopher (1982), "On the antiquity of agriculture in Ethiopia" Journal of African History (Uni of Calif. Berkeley Press)
↑ Barnett, William & Hoopes, John (Eds.) (1995). The Emergence of Pottery. Washington: Smithsonian Institution Press. ISBN 1-56098-517-8
↑ Midant-Reynes, Beatrix (2000), The Prehistory of Egypt: from the first Egyptians to the first Pharaohs (Blackwell)
↑ Fagan, Brian (2004), The Long Hot Summer: how climate changed civilisation (London: Grant Books)
↑ Burroughs, William J. (2005), Climate Change in Prehistory:the end of the reign of Chaos (Cambridge University Press)
Marcel Cohen, Essai comparatif sur la vocabulaire et la phonétique du chamito-sémitique, Champion, Paris 1947.
Igor M. Diakonoff et al., "Historical-Comparative Vocabulary of Afrasian", St. Petersburg Journal of African Studies Nos. 2-6, 1993-7.
Christopher Ehret. Reconstructing Proto-Afroasiatic (Proto-Afrasian): Vowels, Tone, Consonants, and Vocabulary (University of California Publications in Linguistics 126), California, Berkeley 1996.
Barnett, William & Hoopes, John (Eds.) (1995). The Emergence of Pottery. Washington: Smithsonian Institution Press. ISBN 1-56098-517-8
Bernd Heine and Derek Nurse, African Languages, Cambridge University Press, 2000 - Chapter 4
Huehnergard, John (2004)“Afro-Asiatic,” in Woodard R. D. (ed.), The Cambridge Encyclopedia of the World’s Ancient Languages, Cambridge-New York, 138-159
Merritt Ruhlen, A Guide to the World's Languages, Stanford University Press, Stanford 1991.
Lionel Bender et al., Selected Comparative-Historical Afro-Asiatic Studies in Memory of Igor M. Diakonoff, LINCOM 2003.
