Crawford, F. R. (1968). Introduction to data processing. Prentice-Hall.
Cita Chicago Style (17a ed.)Crawford, F. Robert. Introduction to Data Processing. Englewood Cliffs, N.J: Prentice-Hall, 1968.
Cita MLA (9a ed.)Crawford, F. Robert. Introduction to Data Processing. Prentice-Hall, 1968.
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