Citação norma APA

(1961). Charles Babbage on the principles and development of the calculator: And other seminal writings. New York: Dover Publications.

Citação norma Chicago

Charles Babbage On the Principles and Development of the Calculator: And Other Seminal Writings. New York: Dover Publications, 1961.

Citação norma MLA

Charles Babbage On the Principles and Development of the Calculator: And Other Seminal Writings. New York: Dover Publications, 1961.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.