Cita APA (7th ed.)
Preston, D. J., & Child, L. (2007). The wheel of darkness. Vision.
Cita Chicago (17th ed.)
Preston, Douglas J., i Lincoln Child. The Wheel of Darkness. New York: Vision, 2007.
Cita MLA (9th ed.)
Preston, Douglas J., i Lincoln Child. The Wheel of Darkness. Vision, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.