Cita APA (7th ed.)

Perls, F. (1951). Gestalt therapy: Excitement and growth (ed.). Delta.

Cita Chicago (17th ed.)

Perls, Frederick. Gestalt Therapy: Excitement and Growth. ed. New York: Delta, 1951.

Cita MLA (9th ed.)

Perls, Frederick. Gestalt Therapy: Excitement and Growth. ed. Delta, 1951.