Gerard Maldonado Garcia, Lagash i Umma Dues ciutats sumèries enfrontades durant el III mil·lenni aC - https://www.academia.edu/9444814/
Trevor Bryce, The Routledge Handbook of The Peoples and Places of Ancient Western Asia: The Near East from the Early Bronze Age to the fall of the Persian Empire, Routledge, 2009, pp. 738–739.
Inana's descent to the nether world - http://etcsl.orinst.ox.ac.uk/cgi-bin/etcsl.cgi?text=t.1.4.1#
