APA (7th ed.) Citation

Douglas, D. C. (1969). William the Conqueror: The Norman impact upon England. Methuen.

Chicago Style (17th ed.) Citation

Douglas, David Charles. William the Conqueror: The Norman Impact upon England. London: Methuen, 1969.

MLA (9th ed.) Citation

Douglas, David Charles. William the Conqueror: The Norman Impact upon England. Methuen, 1969.

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