APA (7th ed.) Citation

Blyton, E. (1960). Good old secret seven. A Division of hodder headline plc.

Chicago Style (17th ed.) Citation

Blyton, Enid. Good Old Secret Seven. London: A Division of hodder headline plc, 1960.

MLA (9th ed.) Citation

Blyton, Enid. Good Old Secret Seven. A Division of hodder headline plc, 1960.

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