APA (7th ed.) Citation

Blyton, E. (2020). A summertime mystery. Egmont UK Limited.

Chicago Style (17th ed.) Citation

Blyton, Enid. A Summertime Mystery. London: Egmont UK Limited, 2020.

MLA (9th ed.) Citation

Blyton, Enid. A Summertime Mystery. Egmont UK Limited, 2020.

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