APA (7th ed.) Citation

Stewart, P., & Riddell, C. (2009). Return of the emerald skull (1st American ed.). David Fickling Books.

Chicago Style (17th ed.) Citation

Stewart, Paul, and Chris Riddell. Return of the Emerald Skull. 1st American ed. New York: David Fickling Books, 2009.

MLA (8th ed.) Citation

Stewart, Paul, and Chris Riddell. Return of the Emerald Skull. 1st American ed. David Fickling Books, 2009.

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