(1981). Directions in human factors for interactive systems / Henry Ledgard, Andrew Singer, John Whiteside.
Cita Chicago (17th ed.)Directions in Human Factors for Interactive Systems / Henry Ledgard, Andrew Singer, John Whiteside. 1981.
Cita MLA (9th ed.)Directions in Human Factors for Interactive Systems / Henry Ledgard, Andrew Singer, John Whiteside. 1981.
Atenció: Aquestes cites poden no estar 100% correctes.