Bibliography
Black, Jeremy, and Anthony Green. Gods, Demons, and Symbols of Ancient Mesopotamia: An Illustrated Dictionary. Illustrations by Tessa Rickards. London, United Kingdom: The British Museum Press, 1992.
Cirlot Laporta, Juan Eduardo. A Dictionary of Symbols. Second Editions. Translated by Jack Sage. London, England: Routledge, 2001. [E-book edition by Taylor & Francis]
Kosem, Iztok, and Karmen Kosem, eds. Electronic Lexicography in the 21st Century: New Applications for New Users. Proceedings of eLex 2011, Bled, Slovenia, November 10–12, 2011. Ljubljana, Slovenia: Trojina.