National Geographic Society (Spojené státy americké). National Geographic Maps & Carroll, A. (2003). 100 years of flight. National Geographic Society.
Citazione stile Chigago Style (17a edizione)National Geographic Society (Spojené státy americké). National Geographic Maps e Allen Carroll. 100 Years of Flight. Washington: National Geographic Society, 2003.
Citatione MLA (9a ed.)National Geographic Society (Spojené státy americké). National Geographic Maps e Allen Carroll. 100 Years of Flight. National Geographic Society, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.