APA (7th ed.) Citation

Sutherland, D., & David Roberts. (2003). Samantha Cardigan and the ghastly twirling sickness. Egmont.

Chicago Style (17th ed.) Citation

Sutherland, David, and David Roberts. Samantha Cardigan and the Ghastly Twirling Sickness. London: Egmont, 2003.

MLA (9th ed.) Citation

Sutherland, David, and David Roberts. Samantha Cardigan and the Ghastly Twirling Sickness. Egmont, 2003.

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