APA (7th ed.) Citation

Whaley, J. (2018). The Holy Roman Empire: A very short introduction. Oxford University Press.

Chicago Style (17th ed.) Citation

Whaley, Joachim. The Holy Roman Empire: A Very Short Introduction. Oxford: Oxford University Press, 2018.

MLA (9th ed.) Citation

Whaley, Joachim. The Holy Roman Empire: A Very Short Introduction. Oxford University Press, 2018.

Warning: These citations may not always be 100% accurate.