Data Processing Management Association. (1969). Principles of automatic data processing. U.S.A: Data Processing Management Association.
Chicago Style CitationData Processing Management Association. Principles of Automatic Data Processing. U.S.A: Data Processing Management Association, 1969.
Cita MLAData Processing Management Association. Principles of Automatic Data Processing. U.S.A: Data Processing Management Association, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.