APA (7th ed.) Citation

Collingwood, R. G. (1956). The idea of history. Oxford University Press.

Chicago Style (17th ed.) Citation

Collingwood, R. G. The Idea of History. New York: Oxford University Press, 1956.

MLA (9th ed.) Citation

Collingwood, R. G. The Idea of History. Oxford University Press, 1956.