Craig, A. M., Graham, W. A., Kagan, D., Ozment, S., & Turner, F. M. (2000). The Heritage Of World Civilizations. Upper Saddle River, New Jersey: A Unit Of Pearson Educations.
Littell, M. (2003). Ancient World History Patterns Of Interaction. Evanstan, IL: Houghton Mifflin Company.
Mole. (2013). The Neolithic Revolution. Retrieved from Mole's Home Page: http://www.angelfire.com/ca2/kushana/Neolithic.html
Watkins, J. (1999-2003). Neolithic Revolution. Retrieved from Oswego City School District Regents Exam Prep Center: http://regentsprep.org/Regents/global/themes/change/neo.cfm