Donald Flynn. (1998). Information systems requirements (Determination and analysis). London: McGraw-Hill.
Dyfyniad Arddull ChicagoDonald Flynn. Information Systems Requirements (Determination and Analysis). London: McGraw-Hill, 1998.
Dyfyniad MLADonald Flynn. Information Systems Requirements (Determination and Analysis). London: McGraw-Hill, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.