APA (7th ed.) Citation

Cressida Cowell. (2009). How to train your dragon: By Hiccup Horrendous Haddock. Hodder Children's.

Chicago Style (17th ed.) Citation

Cressida Cowell. How to Train Your Dragon: By Hiccup Horrendous Haddock. London: Hodder Children's, 2009.

MLA (9th ed.) Citation

Cressida Cowell. How to Train Your Dragon: By Hiccup Horrendous Haddock. Hodder Children's, 2009.

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