APA (7th ed.) Citation

Blyton, E. (1962). Look Out Secret Seven. Knight Books Hodder And Stoughton.

Chicago Style (17th ed.) Citation

Blyton, Enid. Look Out Secret Seven. London: Knight Books Hodder And Stoughton, 1962.

MLA (9th ed.) Citation

Blyton, Enid. Look Out Secret Seven. Knight Books Hodder And Stoughton, 1962.

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