1. F. Klemm, A History of Western Technology, the MIT Press, Cambridge, MA, 1964.
2. A. F. Burstall, A History of Mechanical Engineering, the MIT Press, Cambridge, MA, 1965.
3. L. Sprague de Camp, The Ancient Engineers, Barnes & Noble Books, New York, 1993.
4. Ancient Rome;Liberati,2006
5. World Cities Yesterday and Today;Swift,2009