APA (7th ed.) Citation

Digby, A. (1999). The Naughtiest girl helps a friend. Hodder Children's Books.

Chicago Style (17th ed.) Citation

Digby, Anne. The Naughtiest Girl Helps a Friend. London: Hodder Children's Books, 1999.

MLA (9th ed.) Citation

Digby, Anne. The Naughtiest Girl Helps a Friend. Hodder Children's Books, 1999.

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