- Cowell, Cressida, How to train your dragon, 1
- How to be a pirate, Cressida Cowell
- A hero's guide to deadly dragons, the heroic misadventures of Hiccup the Viking, as told to Cressida Cowell
- How to speak Dragonese, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 7
- Cowell, Cressida, How to train your dragon, bk. 2
- How To Train Your Dragon, How To Train Your Dragon, Cressida Cowell
- How to fight a dragon's fury, the heroic misadventures of Hiccup the Viking, as told to Cressida Cowell
- How to seize a dragon's jewel, the heroic misadventures of Hiccup the Viking, as told to Cressida Cowell
- How to be a pirate, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 9
- That rabbit belongs to Emily Brown, written by Cressida Cowell ; illustrated by Neal Layton
- Cowell, Cressida, How to train your dragon
- Cowell, Cressida, How to train your dragon, bk. 5
- How to steal a dragon's sword, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 12
- How to betray a dragon's hero, the heroic misadventures of Hiccup the viking, as told to Cressida Cowell
- How to train your dragon, by Hiccup Horrendous Haddock III ; translated from the Old Norse by Cressida Cowell
- Cowell, Cressida, Wizards of once (Series), bk. 2
- How to ride a dragon's storm, the heroic misadventures of Hiccup the Viking, as told to Cressida Cowell
- The wizards of once cressida cowell, Cressida Cowell
- How to train your dragon, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 6
- How to seize a dragon's jewel, Cressida Cowell
- Cowell, Cressida, How to train your dragon, 11
- A hero's guide to deadly dragons, Cressida Cowell
- How to betray a dragon's hero, the heroic misadventures of Hiccup the Viking, as told to Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 10
- Cowell, Cressida, Wizards of once (Series), bk. 1
- How to be a Viking, Cressida Cowell
- How to steal a dragon's sword, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 1
- How to cheat a dragon's curse, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 8
- How to speak Dragonese, Cressida Cowell
- How to fight a dragon's fury, the heroic misadventures of Hiccup the Viking, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 4
- A hero's guide to deadly dragons, Cressida Cowell
- How to twist a dragon's tale, Cressida Cowell
- How to cheat a dragon's curse, Cressida Cowell
- Cowell, Cressida, How to train your dragon, bk. 3
- Cowell, Cressida, How to train your dragon, bk. 11
- How to speak Dragonese, by Hiccup Horrendous Haddock III ; translated from the Old Norse by Cressida Cowell
- How to cheat a dragon's curse, the heroic misadventures of Hiccup the viking, as told to Cressida Cowell
- How to twist a dragon's tale, the heroic misadventures of Hiccup the Viking, as told to Cressida Cowell
- Cowell, Cressida, How to Train Your Dragon
- How to betray a dragon's hero, Cressida Cowell
- How to seize a dragon's jewel, by Cressida Cowell
- How to be a Viking, Cressida Cowell
- How to train your dragon, Cressida Cowell