(1961). Charles Babbage on the principles and development of the calculator: And other seminal writings. New York: Dover Publications.
استشهاد بنمط شيكاغوCharles Babbage On the Principles and Development of the Calculator: And Other Seminal Writings. New York: Dover Publications, 1961.
MLA استشهادCharles Babbage On the Principles and Development of the Calculator: And Other Seminal Writings. New York: Dover Publications, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.