Cita APA (7a ed.)

Freud, S., & Richards, A. (1987). Gesammelte Werke. Imago Publishing.

Cita Chicago Style (17a ed.)

Freud, Sigmund, y Angela Richards. Gesammelte Werke. London: Imago Publishing, 1987.

Cita MLA (8a ed.)

Freud, Sigmund, y Angela Richards. Gesammelte Werke. Imago Publishing, 1987.