APA (7th ed.) Citation

Ferguson, N. (2004). Empire: How Britain made the modern world. Penguin.

Chicago Style (17th ed.) Citation

Ferguson, Niall. Empire: How Britain Made the Modern World. London: Penguin, 2004.

MLA (9th ed.) Citation

Ferguson, Niall. Empire: How Britain Made the Modern World. Penguin, 2004.

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