APA (7th ed.) Citation

Massie, R. K. (2007). Castles of steel: Britain, Germany an the winning of the Great War at sea. Vintage Books.

Chicago Style (17th ed.) Citation

Massie, Robert K. Castles of Steel: Britain, Germany an the Winning of the Great War at Sea. London: Vintage Books, 2007.

MLA (9th ed.) Citation

Massie, Robert K. Castles of Steel: Britain, Germany an the Winning of the Great War at Sea. Vintage Books, 2007.