Enid Blyton. (1943). The Mystery of the Secret Room. Hodder Children's Books.
Dyfyniad Arddull ChicagoEnid Blyton. The Mystery of the Secret Room. New York: Hodder Children's Books, 1943.
Dyfyniad MLAEnid Blyton. The Mystery of the Secret Room. Hodder Children's Books, 1943.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.