"The early prehistory of Mesopotamia – 500,000 to 4,500 BC", Turnhout 2005, ISBN 2-503-50729-8* Oppenheim, A. Leo; 1964.
"The early prehistory of Mesopotamia – 500,000 to 4,500 BC", Turnhout 2005, ISBN 2-503-50729-8* Oppenheim, A. Leo; 1964.