Information needed:
Title of reference book. edition. CD-ROM. Place of publication: Publisher,
    copyright date.

Example:
Encarta Encyclopedia. CD-ROM. Redmond, WA: Microsoft, 1997.

*Note:  The place of publication information is often difficult to locate.
              Sometimes it is available in the "About" option, and sometimes
              it can be found on the CD-ROM case.  For the sources here in the
              Media Center, use the following:

Compton's Interactive World Atlas-Cambridge, MA

Encarta Encyclopedia-Redmond, WA

Grolier's Multimedia Encyclopedia-Danbury, CT