APA (7th ed.) Citation

National Geographic Society (U.S.), National Geographic Society (U.S.), & National Geographic Society (U.S.). (2018). How birds migrate: [Western Hemisphere] ; Navigating by nature : [Eastern Hemisphere]. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.), National Geographic Society (U.S.), and National Geographic Society (U.S.). How Birds Migrate: [Western Hemisphere] ; Navigating by Nature : [Eastern Hemisphere]. Washington, D.C.: National Geographic Society, 2018.

MLA (9th ed.) Citation

National Geographic Society (U.S.), et al. How Birds Migrate: [Western Hemisphere] ; Navigating by Nature : [Eastern Hemisphere]. National Geographic Society, 2018.