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| 1 | Myhrman, D.W., Sumerian Administrative Documents dated in the reigns of the Second Dynasty of Ur from the Temple Archives of Nippur, The Babylonian Expedition of the University of Pennsylvania III/1, Philadelphia 1910 |
| 2 | Civil, M., The Farmer's Instructions. A Sumerian Agricultural Manual, Aula Orientalis - Supplementa 5, Sabadell 1994 |
| http://cdli.earth/P105640 |
| http://www.penn.museum/collections/object.php?irn=585809 |
| http://oracc.museum.upenn.edu/epsd2/P105640 |
| http://www.ebl.lmu.de/library/CBS.11664 |