APA (7th ed.) Citation

Horowitz, A. (2006). Skeleton Key: An Alex Rider adventure. Speak.

Chicago Style (17th ed.) Citation

Horowitz, Anthony. Skeleton Key: An Alex Rider Adventure. New York: Speak, 2006.

MLA (8th ed.) Citation

Horowitz, Anthony. Skeleton Key: An Alex Rider Adventure. Speak, 2006.

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