APA (7th ed.) Citation

Warburton, N. (1993). The Thirteenth Owl. The Bodley Head.

Chicago Style (17th ed.) Citation

Warburton, Nick. The Thirteenth Owl. London: The Bodley Head, 1993.

MLA (9th ed.) Citation

Warburton, Nick. The Thirteenth Owl. The Bodley Head, 1993.

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