|
| 1 | Legrain, L., Business Documents of the Third Dynasty of Ur, Ur Excavations Texts 3, London 1937 |
| 2 | Civil, M., The Farmer's Instructions. A Sumerian Agricultural Manual, Aula Orientalis - Supplementa 5, Sabadell 1994 |
| http://cdli.earth/P137757 |
| http://oracc.museum.upenn.edu/epsd2/P137757 |
| http://www.ebl.lmu.de/library/U.4892 |