APA-referens (7:e uppl.)

Prebble, L., & Harding, L. (2019). A very expensive poison. Methuen Drama/Bloomsbury Publishing Plc.

Chicago-referens (17:e uppl.)

Prebble, Lucy, och Luke Harding. A Very Expensive Poison. London, UK: Methuen Drama/Bloomsbury Publishing Plc, 2019.

MLA-referens (9:e uppl.)

Prebble, Lucy, och Luke Harding. A Very Expensive Poison. Methuen Drama/Bloomsbury Publishing Plc, 2019.