Diebold Group, Inc. (1977). Automatic data processing handbook. McGraw-Hill.
Cita Chicago (17th ed.)Diebold Group, Inc. Automatic Data Processing Handbook. New York: McGraw-Hill, 1977.
Cita MLA (9th ed.)Diebold Group, Inc. Automatic Data Processing Handbook. McGraw-Hill, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.