APA (7th ed.) Citation

Darwin, C. G. (1953). The next million years ([1st American ed.].). Doubleday.

Chicago Style (17th ed.) Citation

Darwin, Charles Galton. The Next Million Years. [1st American ed.]. Garden City, N.Y.: Doubleday, 1953.

MLA (9th ed.) Citation

Darwin, Charles Galton. The Next Million Years. [1st American ed.]. Doubleday, 1953.