APA (7th ed.) Citation

Ketelbey, D. M. (1929). A history of modern times: From 1789 to the present day. T. Y. Crowell co..

Chicago Style (17th ed.) Citation

Ketelbey, D. M. A History of Modern Times: From 1789 to the Present Day. New York: T. Y. Crowell co., 1929.

MLA (9th ed.) Citation

Ketelbey, D. M. A History of Modern Times: From 1789 to the Present Day. T. Y. Crowell co., 1929.