Christie, A. (2011). And then there were none (1st Harper paperback ed.). Harper.
Cita Chicago Style (17a ed.)Christie, Agatha. And Then There Were None. 1st Harper paperback ed. New York: Harper, 2011.
Cita MLA (8a ed.)Christie, Agatha. And Then There Were None. 1st Harper paperback ed. Harper, 2011.
Precaución: Estas citas no son 100% exactas.