APA (7th ed.) Citation

Barclay, L. (2018). A noise downstairs. Orion Books.

Chicago Style (17th ed.) Citation

Barclay, Linwood. A Noise Downstairs. London: Orion Books, 2018.

MLA (9th ed.) Citation

Barclay, Linwood. A Noise Downstairs. Orion Books, 2018.