By Ryan, Timothy W..
EE.UU : Prentice Hall, 1997 0133489965

By Coad, Peter.
EE.UU : Yourdon Press, 1997 , Incluye diskette 3 1/2. 0138401179

By Randall, Richard.
EE.UU : Addison-Wesley, 1995 0201633795

By Patnaik, Pradyot.
EE.UU : Lewis Publishers, 1997 0873719891

EE.UU : Microsoft, 1993 .
311 p.

EE UU : Liant, 1985

By Greenberg, Michael D..
EE.UU : Prentice Hall, 1988 013.0105058

Arlington, Virginia : Fundación Interamericana : | Congreso de los EE.UU, 1991 .
vol. : , Actualización 2002.