APA-referens (7:e uppl.)

Ouyang, X., & Mínguez, V. (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. Consejo Superior de Investigaciones Científicas.

Chicago-referens (17:e uppl.)

Ouyang, Xiaoli, och Víctor Mínguez. 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: Consejo Superior de Investigaciones Científicas, 2013.

MLA-referens (9:e uppl.)

Ouyang, Xiaoli, och Víctor Mínguez. 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. Consejo Superior de Investigaciones Científicas, 2013.