Williams, T. I. (1987). The history of invention: From Stone Axes to Silicon Chips. New York: Facts On File.
Παραπομπή Chicago StyleWilliams, Trevor I. The History of Invention: From Stone Axes to Silicon Chips. New York: Facts On File, 1987.
Παραπομπή MLAWilliams, Trevor I. The History of Invention: From Stone Axes to Silicon Chips. New York: Facts On File, 1987.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.