Cita APA (7a ed.)

Perls, F. S. (1969). Ego, hunger, and aggression; the beginning of gestalt therapy. Random House.

Cita Chicago Style (17a ed.)

Perls, Frederick S. Ego, Hunger, and Aggression; the Beginning of Gestalt Therapy. New York: Random House, 1969.

Cita MLA (9a ed.)

Perls, Frederick S. Ego, Hunger, and Aggression; the Beginning of Gestalt Therapy. Random House, 1969.

Precaución: Estas citas no son 100% exactas.