APA (7th ed.) Zitazioa

(1988). Inventors and discoverers: Changing our: World. National Geographic Society.

Chicago Style (17th ed.) Zitazioa

Inventors and Discoverers: Changing Our: World. Washington D.C.: National Geographic Society, 1988.

MLA (9th ed.) Zitazioa

Inventors and Discoverers: Changing Our: World. National Geographic Society, 1988.