Cita APA (7th ed.)
Perls, F. S. The Gestalt Approach and Eye Witness to Therapy. Bantam Books.
Cita Chicago (17th ed.)
Perls, Frederick S. The Gestalt Approach and Eye Witness to Therapy. Nueva York, EUA: Bantam Books.
Cita MLA (9th ed.)
Perls, Frederick S. The Gestalt Approach and Eye Witness to Therapy. Bantam Books.
Atenció: Aquestes cites poden no estar 100% correctes.