APA (7th ed.) Citation

Enid Blyton. (1941). The Twins At St Clare's. Hodder Children's Book.

Chicago Style (17th ed.) Citation

Enid Blyton. The Twins At St Clare's. London: Hodder Children's Book, 1941.

MLA (9th ed.) Citation

Enid Blyton. The Twins At St Clare's. Hodder Children's Book, 1941.

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