APA (7th ed.) Citation

Cornwell, B. (2011). Excalibur : a novel of Arthur / Bernard Cornwell: A novel of Arthur. Penguin.

Chicago Style (17th ed.) Citation

Cornwell, Bernard. Excalibur : A Novel of Arthur / Bernard Cornwell: A Novel of Arthur. London: Penguin, 2011.

MLA (9th ed.) Citation

Cornwell, Bernard. Excalibur : A Novel of Arthur / Bernard Cornwell: A Novel of Arthur. Penguin, 2011.

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