APA (7th ed.) Citation

Spencer, C., & Tasker, J. (1990). Which of us two?: The story of a love affair. Viking.

Chicago Style (17th ed.) Citation

Spencer, Colin, and John Tasker. Which of Us Two?: The Story of a Love Affair. London: Viking, 1990.

MLA (9th ed.) Citation

Spencer, Colin, and John Tasker. Which of Us Two?: The Story of a Love Affair. Viking, 1990.

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