APA (7th ed.) Citation

Enid Blyton. (1956). The Famous Five: Five on a Secret Trail. Hodder's Children's Book.

Chicago Style (17th ed.) Citation

Enid Blyton. The Famous Five: Five on a Secret Trail. London: Hodder's Children's Book, 1956.

MLA (9th ed.) Citation

Enid Blyton. The Famous Five: Five on a Secret Trail. Hodder's Children's Book, 1956.