Lua APA (7ú heag.)

Bryan, C. D. B. (1994). The National Geographic Society: 100 years of adventure and discovery. Harry N. Abrams.

Lua i Stíl Chicago (17ú heag.)

Bryan, C. D. B. The National Geographic Society: 100 Years of Adventure and Discovery. New York: Harry N. Abrams, 1994.

Lua MLA (9ú heag.)

Bryan, C. D. B. The National Geographic Society: 100 Years of Adventure and Discovery. Harry N. Abrams, 1994.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.