Cita APA (7th ed.)

Freud, S. (1977). Introductory lectures on psychoanalysis =. Norton.

Cita Chicago (17th ed.)

Freud, Sigmund. Introductory Lectures on Psychoanalysis =. New York: Norton, 1977.

Cita MLA (9th ed.)

Freud, Sigmund. Introductory Lectures on Psychoanalysis =. Norton, 1977.