Freud, S. (2005). The Unconscious. Penguin.
Cita Chicago (17th ed.)Freud, Sigmund. The Unconscious. Penguin, 2005.
Cita MLA (9th ed.)Freud, Sigmund. The Unconscious. Penguin, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)