Lua APA (7ú heag.)
Allen, W. L. National Geographic: Vol. 191, no. 1, January 1997. National Geographic Society.
Lua i Stíl Chicago (17ú heag.)
Allen, William L. National Geographic: Vol. 191, No. 1, January 1997. Washington, EUA: National Geographic Society.
Lua MLA (9ú heag.)
Allen, William L. National Geographic: Vol. 191, No. 1, January 1997. National Geographic Society.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.