APA (7th ed.) Citation

Williams, W., & Allan, D. (2013). I know what you did last supper. Piatkus.

Chicago Style (17th ed.) Citation

Williams, Wayne, and Darren Allan. I Know What You Did Last Supper. London, UK: Piatkus, 2013.

MLA (9th ed.) Citation

Williams, Wayne, and Darren Allan. I Know What You Did Last Supper. Piatkus, 2013.

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