| GMD | Text |
| Classification | 823.14 COW |
| Publisher | London, Hodder Children's, c2003. |
| Subject | Vikings -- Juvenile fiction.Dragons -- Juvenile fiction.Haddock, Hiccup Horrendous, -- III (Fictitious character) -- Juvenile fiction. |
| Description | 405 p : ill ; 20 cm |
| ISBN | 9780340999073 |