APA (7th ed.) Citation

Freud, S. (2005). The Unconscious. Penguin.

Chicago Style (17th ed.) Citation

Freud, Sigmund. The Unconscious. Penguin, 2005.

MLA (9th ed.) Citation

Freud, Sigmund. The Unconscious. Penguin, 2005.

Warning: These citations may not always be 100% accurate.