W. J. Hinke, "A New Boundary Stone of Nebuchadrezzar I from Nippur (BE IV)", Universitas Philadelphia, 1907
Ross, John, "A Journey from Baghdád to the Ruins of Opis, and the Median Wall, in 1834", Jurnal Paguyuban kegeografian Kerajaan, jld. 11, hlmn. 121–36, 1841
Rich, C. J., "Narrative of a Residence in Koordistan &c, edited by his widow", London, 1836
Lane, W. H., "Babylonian Problems", John Murray, London, 1923
Chaffey, Ilana, "Come as you are, as you were, as I want you to be: A Study of Foreign Musicians in the Mari Archives", Disertasi, Universitas Macquarie, 2022
Naohiko Kawakami, "The Location of the Ancient City of Akkade: Review of Past Theories and Identification of Issues for Formulating a Specific Methodology for Searching Akkade", AL-RĀFIDĀN: Journal of Western Asiatic Studies, jld. 45, hlmn. 45–68, 2023
Kawakami, Naohiko, "GIS and Historical Geographical Analyses of the Reconstructed Ancient Course of the Tigris in the Northern Part of Southern Mesopotamia", al-Rāfidān, jld. 43, hlmn. 13-38, 2022
Andrew George, "Babylonian and Assyrian: a history of Akkadian", dalam: Postgate, J. N. (penyunting), Languages of Iraq, Ancient and Modern, London: British School of Archaeology in Iraq, 2007
Unger, Eckhard (1928), "Akkad", dalam Ebeling, Erich; Meissner, Bruno (ed.), Reallexikon der Assyriologie (dalam bahasa Jerman), vol.1, Berlin: W. de Gruyter, hlm.62, OCLC23582617