|
| 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/P137680 |
| http://www.ur-online.org/subject/4031/ |
| http://www.britishmuseum.org/collection/search?museum_number=130424 |
| http://oracc.museum.upenn.edu/epsd2/P137680 |
| http://www.ebl.lmu.de/library/BM.130424 |