APA (7th ed.) Citation

Blyton, E. (2015). Good Old Secret Seven. HCB.

Chicago Style (17th ed.) Citation

Blyton, Enid. Good Old Secret Seven. UK: HCB, 2015.

MLA (9th ed.) Citation

Blyton, Enid. Good Old Secret Seven. HCB, 2015.

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