APA (7th ed.) Zitazioa

Freud, S. (1950). Beyond the pleasure principle. the Hogarth pr.

Chicago Style (17th ed.) Zitazioa

Freud, Sigmund. Beyond the Pleasure Principle. London: the Hogarth pr, 1950.

MLA (9th ed.) Zitazioa

Freud, Sigmund. Beyond the Pleasure Principle. the Hogarth pr, 1950.