APA (7th ed.) Citation

Blyton, E. THE MYSTERY OF THE SECRET ROOM. Egmont.

Chicago Style (17th ed.) Citation

Blyton, Enid. THE MYSTERY OF THE SECRET ROOM. London: Egmont.

MLA (9th ed.) Citation

Blyton, Enid. THE MYSTERY OF THE SECRET ROOM. Egmont.

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