APA (7th ed.) Citation

Howard, M. (2007). The First World War: A very short introduction. Oxford University Press.

Chicago Style (17th ed.) Citation

Howard, Michael. The First World War: A Very Short Introduction. Oxford ; New York: Oxford University Press, 2007.

MLA (9th ed.) Citation

Howard, Michael. The First World War: A Very Short Introduction. Oxford University Press, 2007.