APA引文

National Geographic Society. (1999). The complete National Geographic: 110 years of National Geographic magazine on CD-ROM. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society. The Complete National Geographic: 110 Years of National Geographic Magazine on CD-ROM. Washington, D.C: National Geographic Society, 1999.

MLA引文

National Geographic Society. The Complete National Geographic: 110 Years of National Geographic Magazine on CD-ROM. National Geographic Society, 1999.