Cita APA (7a ed.)
Perls, F. S. (1976). The gestalt Approach & eye witness to therapy.
Cita estilo Chicago (17a ed.)
Perls, Frederick S. The Gestalt Approach & Eye Witness to Therapy. 1976.
Cita MLA (9a ed.)
Perls, Frederick S. The Gestalt Approach & Eye Witness to Therapy. 1976.
警告：這些引文格式不一定是100％准確.