APA (7th ed.) Citation

Castaldo, N. F., De Seve, K., & Raven-Ellison, D. (2014). Mission: polar bear rescue: All about polar bears and how to save them. National Geographic Society.

Chicago Style (17th ed.) Citation

Castaldo, Nancy F., Karen De Seve, and Daniel Raven-Ellison. Mission: Polar Bear Rescue: All About Polar Bears and How to Save Them. Washington, D.C.: National Geographic Society, 2014.

MLA (8th ed.) Citation

Castaldo, Nancy F., et al. Mission: Polar Bear Rescue: All About Polar Bears and How to Save Them. National Geographic Society, 2014.

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