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.
Цитирование в стиле Чикаго (17-е изд.)Castaldo, Nancy F., Karen De Seve, и Daniel Raven-Ellison. Mission: Polar Bear Rescue: All About Polar Bears and How to Save Them. Washington, D.C.: National Geographic Society, 2014.
Цитирование MLA (8-е изд.)Castaldo, Nancy F., et al. Mission: Polar Bear Rescue: All About Polar Bears and How to Save Them. National Geographic Society, 2014.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.