APA (7th ed.) Citation

Enid Blyton. (1942). The Naughtiest Girl again. Hodder Children's Books.

Chicago Style (17th ed.) Citation

Enid Blyton. The Naughtiest Girl Again. Great Britain: Hodder Children's Books, 1942.

MLA (9th ed.) Citation

Enid Blyton. The Naughtiest Girl Again. Hodder Children's Books, 1942.