Cita APA

Freud, S., Freud, A., & Strachey, J. (1991). The essentials of psycho-analysis. London: Penguin Books.

Chicago Style Citation

Freud, Sigmund, Anna Freud, i James Strachey. The Essentials of Psycho-analysis. London: Penguin Books, 1991.

Cita MLA

Freud, Sigmund, Anna Freud, i James Strachey. The Essentials of Psycho-analysis. London: Penguin Books, 1991.

Atenció: Aquestes cites poden no estar 100% correctes.