Cita APA (7a ed.)
Allen, W. L. (2004). National Geographic: Vol. 206, no. 5, November 2004. National Geographic Society.
Cita estilo Chicago (17a ed.)
Allen, William L. National Geographic: Vol. 206, No. 5, November 2004. Washington, EUA: National Geographic Society, 2004.
Cita MLA (9a ed.)
Allen, William L. National Geographic: Vol. 206, No. 5, November 2004. National Geographic Society, 2004.
Precaución: Estas citas no son 100% exactas.