APA (7th ed.) Citation

Grosvenor, M. B., & Grosvenor, G. M. (1979). Wild animals of North America. National Geographic Society.

Chicago Style (17th ed.) Citation

Grosvenor, Melville Bell, and Gilbert M. Grosvenor. Wild Animals of North America. Washington: National Geographic Society, 1979.

MLA (8th ed.) Citation

Grosvenor, Melville Bell, and Gilbert M. Grosvenor. Wild Animals of North America. National Geographic Society, 1979.