The complete national geographic
[electronic resource] :
108 years of National Geographic Magazine on CD-ROM.

APA Citation

National Geographic Society (U.S.). (1997). The complete national geographic: 108 years of National Geographic Magazine on CD-ROM. Washington, D.C.: The Society.

MLA Citation

National Geographic Society (U.S.). The Complete National Geographic: 108 Years of National Geographic Magazine On CD-ROM. Washington, D.C.: The Society, 1997.

Warning: These citations may not always be complete (especially for serials).