EreshkigalBritannica Academic, Encyclopædia Britannica. Encyclopædia Britannica Inc. Viitattu 4.4.2018. (englanniksi)
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Sumerian Mythology: Chapter II: Myths of Origins (”goddess Ereshkigal, the counterpart of the Greek Persephone, whom we know as queen of the nether world, but who originally was probably a sky-goddess, was carried off into the nether world, perhaps by Kur. No doubt to avenge this deed, the water-god Enki set sail to attack Kur.”) sacred-texts.com. Viitattu 11.9.2008. (englanniksi)