Cita APA (7a ed.)

Enid Blyton. (1957). The Secret Seven Mystery: Secret Seven Mystery. Hodder Children's Books.

Cita Chicago Style (17a ed.)

Enid Blyton. The Secret Seven Mystery: Secret Seven Mystery. Great Britain: Hodder Children's Books, 1957.

Cita MLA (9a ed.)

Enid Blyton. The Secret Seven Mystery: Secret Seven Mystery. Hodder Children's Books, 1957.