APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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