APA (7th ed.) Citation

Gaarder, J., & Hails, S. J. (1996). The solitaire mystery. Phoenix House.

Chicago Style (17th ed.) Citation

Gaarder, Jostein, and Sarah Jane Hails. The Solitaire Mystery. London: Phoenix House, 1996.

MLA (9th ed.) Citation

Gaarder, Jostein, and Sarah Jane Hails. The Solitaire Mystery. Phoenix House, 1996.