APA aipamena

(2014). National geographic: The future of food. Washington, DC: National Geographic Society.

Chicago Style aipamena

National Geographic: The Future of Food. Washington, DC: National Geographic Society, 2014.

MLA aipamena

National Geographic: The Future of Food. Washington, DC: National Geographic Society, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.