Headrick, D. (2009). Technology: A world history. Oxford University Press.
Chicago Style aipamenaHeadrick, Daniel. Technology: A World History. New York; Oxford: Oxford University Press, 2009.
MLA aipamenaHeadrick, Daniel. Technology: A World History. Oxford University Press, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.