APA (7th ed.) Citation

Gray, R., & Argyle, C. (1990). Chronicle of the First World War: A chronology of the First World War. Facts on File.

Chicago Style (17th ed.) Citation

Gray, Randal, and Christopher Argyle. Chronicle of the First World War: A Chronology of the First World War. New York: Facts on File, 1990.

MLA (9th ed.) Citation

Gray, Randal, and Christopher Argyle. Chronicle of the First World War: A Chronology of the First World War. Facts on File, 1990.