Cita APA (7th ed.)
Watson, L. (1995). Dark nature: A natural history of evil (ed.). Hodder and Stoughton.
Cita Chicago (17th ed.)
Watson, Lyall. Dark Nature: A Natural History of Evil. ed. London: Hodder and Stoughton, 1995.
Cita MLA (9th ed.)
Watson, Lyall. Dark Nature: A Natural History of Evil. ed. Hodder and Stoughton, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.