APA (7th ed.) Citation

Barlow, F. (1955). The feudal kingdom of England 1042 - 1216. Longmans.

Chicago Style (17th ed.) Citation

Barlow, Frank. The Feudal Kingdom of England 1042 - 1216. London, New York, Toronto: Longmans, 1955.

MLA (9th ed.) Citation

Barlow, Frank. The Feudal Kingdom of England 1042 - 1216. Longmans, 1955.

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