APA (7th ed.) Citation

Wallace, W. K. (1922). The trend of history: Origins of twentieth century problems. The Macmillan company.

Chicago Style (17th ed.) Citation

Wallace, William Kay. The Trend of History: Origins of Twentieth Century Problems. New York: The Macmillan company, 1922.

MLA (9th ed.) Citation

Wallace, William Kay. The Trend of History: Origins of Twentieth Century Problems. The Macmillan company, 1922.