APA (7th ed.) Citation

Ardagh, P., & Roberts, D. (2004). Heir of mystery, or, Four legs good: The second unlikely exploit. Henry Holt.

Chicago Style (17th ed.) Citation

Ardagh, Philip, and David Roberts. Heir of Mystery, or, Four Legs Good: The Second Unlikely Exploit. New York: Henry Holt, 2004.

MLA (8th ed.) Citation

Ardagh, Philip, and David Roberts. Heir of Mystery, or, Four Legs Good: The Second Unlikely Exploit. Henry Holt, 2004.

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