Pritchard, J. A. T., & Wilson, P. A. (1982). Planning office automation: Electronic message systems. NCC.
Cita Chicago (17th ed.)Pritchard, J. A. T., i P. A. Wilson. Planning Office Automation: Electronic Message Systems. Manchester: NCC, 1982.
Cita MLA (8th ed.)Pritchard, J. A. T., i P. A. Wilson. Planning Office Automation: Electronic Message Systems. NCC, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.