Παραπομπή APA

Freud, S. (1991). Jokes and their relation to the unconscious. Penguin Books.

Παραπομπή Chicago Style

Freud, Sigmund. Jokes and Their Relation to the Unconscious. England: Penguin Books, 1991.

Παραπομπή MLA

Freud, Sigmund. Jokes and Their Relation to the Unconscious. Penguin Books, 1991.