APA (7th ed.) Citation

Healey, E. (2018). Whistle in the dark. Viking, an imprint of Penguin books.

Chicago Style (17th ed.) Citation

Healey, Emma. Whistle in the Dark. [London]: Viking, an imprint of Penguin books, 2018.

MLA (9th ed.) Citation

Healey, Emma. Whistle in the Dark. Viking, an imprint of Penguin books, 2018.