APA (7th ed.) Citation

Nelson, E. (1930). Wild animals of North America: Intimate study of big and little creatures of the mammals kingdom. The National Geographic Society.

Chicago Style (17th ed.) Citation

Nelson, E.W. Wild Animals of North America: Intimate Study of Big and Little Creatures of the Mammals Kingdom. Washington: The National Geographic Society, 1930.

MLA (9th ed.) Citation

Nelson, E.W. Wild Animals of North America: Intimate Study of Big and Little Creatures of the Mammals Kingdom. The National Geographic Society, 1930.