APA (7th ed.) Citation

National Geographic Society. (1988). The explorers, a century of discovery [Vídeo] (Special commemorative ed.). National Geographic.

Chicago Style (17th ed.) Citation

National Geographic Society. The Explorers, a Century of Discovery [Vídeo]. Special commemorative ed. United Kingdom: National Geographic, 1988.

MLA (9th ed.) Citation

National Geographic Society. The Explorers, a Century of Discovery [Vídeo]. Special commemorative ed. National Geographic, 1988.

Warning: These citations may not always be 100% accurate.