Langley, A. (1998). Castle at war: The story of a siege. Dorling Kindersley.
Cita Chicago (17th ed.)Langley, Andrew. Castle at War: The Story of a Siege. London: Dorling Kindersley, 1998.
Cita MLA (8th ed.)Langley, Andrew. Castle at War: The Story of a Siege. Dorling Kindersley, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.