Edwards, P. (1993). Systems analysis & design. Mitchell McGraw-Hill.
Cita Chicago (17th ed.)Edwards, Perry. Systems Analysis & Design. New York: Mitchell McGraw-Hill, 1993.
Cita MLA (9th ed.)Edwards, Perry. Systems Analysis & Design. Mitchell McGraw-Hill, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.