Purser, A. (2011). Foul play at four. Berkley Prime Crime.
Cita Chicago Style (17a ed.)Purser, Ann. Foul Play at Four. New York: Berkley Prime Crime, 2011.
Cita MLA (8a ed.)Purser, Ann. Foul Play at Four. Berkley Prime Crime, 2011.
Precaución: Estas citas no son 100% exactas.