APA (7th ed.) Citation

Blyton, E. (2006). Secret seven mystery. Hodder Children's Books.

Chicago Style (17th ed.) Citation

Blyton, Enid. Secret Seven Mystery. London: Hodder Children's Books, 2006.

MLA (9th ed.) Citation

Blyton, Enid. Secret Seven Mystery. Hodder Children's Books, 2006.

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