Cortada, J. W. (1993). Before the Computer: IBM, NCR, Burroughs, and Remington Rand and the Industry They Created, 1865-1956. Princeton University Press.
Cita Chicago Style (17a ed.)Cortada, James W. Before the Computer: IBM, NCR, Burroughs, and Remington Rand and the Industry They Created, 1865-1956. Princeton, New Jersey: Princeton University Press, 1993.
Cita MLA (8a ed.)Cortada, James W. Before the Computer: IBM, NCR, Burroughs, and Remington Rand and the Industry They Created, 1865-1956. Princeton University Press, 1993.
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