APA (7th ed.) Citation

Cowell, C. (2017). How To Train Your Dragon #9: How To Steal A Dragon's Sword (1st.). Hodder's Children's Books.

Chicago Style (17th ed.) Citation

Cowell, Cressida. How To Train Your Dragon #9: How To Steal A Dragon's Sword. 1st. Great Britain: Hodder's Children's Books, 2017.

MLA (9th ed.) Citation

Cowell, Cressida. How To Train Your Dragon #9: How To Steal A Dragon's Sword. 1st. Hodder's Children's Books, 2017.