Cita APA (7a ed.)
Carroll, A., & Allen, W. L. (2001). Destination Mars. National Geographic Society.
Cita estilo Chicago (17a ed.)
Carroll, Allen, y William L. Allen. Destination Mars. Washington, EUA: National Geographic Society, 2001.
Cita MLA (9a ed.)
Carroll, Allen, y William L. Allen. Destination Mars. National Geographic Society, 2001.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.