| Bibliography |  Suggestions |
| 1 | Yıldız, F. - Gomi, T., Die Umma-Texte aus den Archäologischen Museen zu Istanbul. Band III (Nr. 1601-2300), Bethesda 1993 |
| 2 | Steinkeller, P., "New Light on the Hydrology and Topography of Southern Babylonia in the Third Millennium", Zeitschrift für Assyriologie 91 (2001) 22-84 |
| 3 | Steinkeller, P., "The Umma Field Ušgida and the Question of GARšana's Location", B.J. Collins - P. Michalowski (eds.), Beyond Hatti. A Tribute to Gary Beckman, Atlanta 2013, pp. 295-308 |
| 4 | Blaschke, T., Euphrat und Tigris im Alten Orient, Leipziger Altorientalistische Studien 6, Wiesbaden 2018 |
| http://oracc.museum.upenn.edu/epsd2/P139834 |
| http://cdli.earth/P139834 |