Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.