APA (7th ed.) Citation

Camp, W. H., Boswell, V. R., & Grosvenor, M. B. (1957). The world in your garden. National Geographic Society.

Chicago Style (17th ed.) Citation

Camp, Wendell Holmes, Victor R. Boswell, and Melville Bell Grosvenor. The World in Your Garden. Washington: National Geographic Society, 1957.

MLA (8th ed.) Citation

Camp, Wendell Holmes, et al. The World in Your Garden. National Geographic Society, 1957.