Wilson, K. (1990). Unsolved: Great mysteries of the 20th century (1. Carroll & Graf ed.). Carroll & Graf.
Cita Chicago Style (17a ed.)Wilson, Kirk. Unsolved: Great Mysteries of the 20th Century. 1. Carroll & Graf ed. New York: Carroll & Graf, 1990.
Cita MLA (9a ed.)Wilson, Kirk. Unsolved: Great Mysteries of the 20th Century. 1. Carroll & Graf ed. Carroll & Graf, 1990.
Precaución: Estas citas no son 100% exactas.