APA (7th ed.) Citation

Wells, H. G. (1924). In the days of the Comet. Scribner's.

Chicago Style (17th ed.) Citation

Wells, H. G. In the Days of the Comet. New York: Scribner's, 1924.

MLA (9th ed.) Citation

Wells, H. G. In the Days of the Comet. Scribner's, 1924.