Babbage, C., Morrison, P., & Morrison, E. (1961). Charles Babbage on the principles and development of the calculator: : and other seminal writings. New York: Dover Publications.
Παραπομπή Chicago StyleBabbage, Charles, Philip Morrison, and Emily Morrison. Charles Babbage On the Principles and Development of the Calculator: : And Other Seminal Writings. New York: Dover Publications, 1961.
Παραπομπή MLABabbage, Charles, Philip Morrison, and Emily Morrison. Charles Babbage On the Principles and Development of the Calculator: : And Other Seminal Writings. New York: Dover Publications, 1961.
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