Παραπομπή APA

Denny, M. (2007). Ingenium: Five machines that changed the world. Baltimore: Johns Hopkins University Press.

Παραπομπή Chicago Style

Denny, Mark. Ingenium: Five Machines That Changed the World. Baltimore: Johns Hopkins University Press, 2007.

Παραπομπή MLA

Denny, Mark. Ingenium: Five Machines That Changed the World. Baltimore: Johns Hopkins University Press, 2007.

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