Cita APA (7th ed.)
Smith, R. M. National Geographic Australia. National Geographic Society ; RBA.
Cita Chicago (17th ed.)
Smith, Roff Martin. National Geographic Australia. Washington, EUA : Madrid, España: National Geographic Society ; RBA.
Cita MLA (9th ed.)
Smith, Roff Martin. National Geographic Australia. National Geographic Society ; RBA.
Atenció: Aquestes cites poden no estar 100% correctes.