Williams, T. I. (1987). The history of invention: From Stone Axes to Silicon Chips. New York: Facts On File.
Čikaški stil citiranjaWilliams, Trevor I. The History of Invention: From Stone Axes to Silicon Chips. New York: Facts On File, 1987.
MLA način citiranjaWilliams, Trevor I. The History of Invention: From Stone Axes to Silicon Chips. New York: Facts On File, 1987.
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