Cita APA (7th ed.)

Enid Blyton. (1943). The Mystery of the strange messages. Hodder Children's Book.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

Enid Blyton. The Mystery of the Strange Messages. Hodder Children's Book, 1943.