APA (7th ed.) Citation

Ward, B., & Dubos, R. (1972). Only One Earth. Norton.

Chicago Style (17th ed.) Citation

Ward, Barbara, and Rene Dubos. Only One Earth. Norton, 1972.

MLA (8th ed.) Citation

Ward, Barbara, and Rene Dubos. Only One Earth. Norton, 1972.

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