APA (7th ed.) Citation

Strachan, H. (1998). World War I: A history. Oxford University Press.

Chicago Style (17th ed.) Citation

Strachan, Hew. World War I: A History. Oxford ; New York: Oxford University Press, 1998.

MLA (9th ed.) Citation

Strachan, Hew. World War I: A History. Oxford University Press, 1998.