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Clark, John; Williams, Kenneth; Michaels, Joseph; Marean, Curtis (1984). "A Middle Stone Age Occupation Site at Porc Epic at Dire Dawa (East-Central Ethiopia)". African Archaeological Review. 2: 37–71. doi:10.1007/BF01117225. S2CID128870388.
Asnake Kefale (2014). "Ethnic decentralization and the challenges of inclusive governance in multiethnic cities: The case of Dire Dawa, Ethiopia". Regional & Federal Studies. 24 (5): 589–605. doi:10.1080/13597566.2014.971772. S2CID154137709.
Clark, John; Williams, Kenneth; Michaels, Joseph; Marean, Curtis (1984). "A Middle Stone Age Occupation Site at Porc Epic at Dire Dawa (East-Central Ethiopia)". African Archaeological Review. 2: 37–71. doi:10.1007/BF01117225. S2CID128870388.
Asnake Kefale (2014). "Ethnic decentralization and the challenges of inclusive governance in multiethnic cities: The case of Dire Dawa, Ethiopia". Regional & Federal Studies. 24 (5): 589–605. doi:10.1080/13597566.2014.971772. S2CID154137709.