Cita APA (7a ed.)

Christie, A. (1991). And then there were none. Berkley Books.

Cita Chicago Style (17a ed.)

Christie, Agatha. And Then There Were None. New York: Berkley Books, 1991.

Cita MLA (9a ed.)

Christie, Agatha. And Then There Were None. Berkley Books, 1991.