Freud, S. (1960). The ego and the id. Norton.
Lua i Stíl Chicago (17ú heag.)Freud, Sigmund. The Ego and the Id. New York: Norton, 1960.
Lua MLA (9ú heag.)Freud, Sigmund. The Ego and the Id. Norton, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.