Ouyang, X. (2013). Monetary role of silver and its administration in mesopotamia during the Ur III period (C. 2112-2004 BCE): A case study of the Umma province. Editorial CSIC Consejo Superior de Investigaciones Científicas.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিOuyang, Xiaoli. Monetary Role of Silver and Its Administration in Mesopotamia During the Ur III Period (C. 2112-2004 BCE): A Case Study of the Umma Province. Madrid: Editorial CSIC Consejo Superior de Investigaciones Científicas, 2013.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিOuyang, Xiaoli. Monetary Role of Silver and Its Administration in Mesopotamia During the Ur III Period (C. 2112-2004 BCE): A Case Study of the Umma Province. Editorial CSIC Consejo Superior de Investigaciones Científicas, 2013.
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