APA Citation

Willumsen, G., & Nye, B. (2008). 30 años de los especiales de National Geographic. México: National Geographic Society.

Chicago Style Citation

Willumsen, Gail, and Barry Nye. 30 Años De Los Especiales De National Geographic. México: National Geographic Society, 2008.

MLA Citation

Willumsen, Gail, and Barry Nye. 30 Años De Los Especiales De National Geographic. México: National Geographic Society, 2008.

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