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| 1 | Jones, T.B. - Snyder, J.W., Sumerian Economic Texts from the Third Ur Dynasty. A Catalogue and Discussion of Documents from Various Collections, Minneapolis 1961 |
| 2 | Tsouparopoulou, C., The Ur III Seals Impressed on Documents from Puzriš-Dagān (Drehem), Heidelberger Studien zum Alten Orient 16, Heidelberg 2015 |
| http://www.bonhams.com/auctions/11597/lot/337 |
| http://oracc.museum.upenn.edu/epsd2/P129524 |
| http://cdli.earth/P129524 |