APA (7th ed.) Citation

Enid Blyton. (1943). The Mystery of the Strange Bundle. Hodder Children's Books.

Chicago Style (17th ed.) Citation

Enid Blyton. The Mystery of the Strange Bundle. Great Britain: Hodder Children's Books, 1943.

MLA (9th ed.) Citation

Enid Blyton. The Mystery of the Strange Bundle. Hodder Children's Books, 1943.