APA (7th ed.) Citation

Watson, S. J. (2012). Before I go to sleep. Transworld Publishers.

Chicago Style (17th ed.) Citation

Watson, S. J. Before I Go to Sleep. London: Transworld Publishers, 2012.

MLA (8th ed.) Citation

Watson, S. J. Before I Go to Sleep. Transworld Publishers, 2012.

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