Παραπομπή σε μορφή APA (7η εκδ.)

Freud, S., Strachey, J., & Richards, A. (1991). On metapsychology: The theory of psychoanalysis : beyond the pleasure of principle the ego and the ID and other works. Penguin Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Freud, Sigmund, James Strachey, και Angela Richards. On Metapsychology: The Theory of Psychoanalysis : Beyond the Pleasure of Principle the Ego and the ID and Other Works. London: Penguin Books, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Freud, Sigmund, et al. On Metapsychology: The Theory of Psychoanalysis : Beyond the Pleasure of Principle the Ego and the ID and Other Works. Penguin Books, 1991.