This booklet provides a clear and accessible explanation of gestalt therapy for the newcomer and as a point of reference for the more experienced therapist.
Köhler, W. (1920). Die physischen Gestalten in Ruhe und im stationären Zustand. Eine naturphilosophische Untersuchung. Braunschweig: Vieweg. Köhler, W. (1933). Psychologische Probleme. Berlin: Springer. Köhler, W. (1938).
The Selected Papers of Wolfgang Köhler
First published in the USA in 1951.
First published in 1951, Gestalt Therapy has remained constantly in print ever since and is regarded as one of the most important studies of self-awareness available.
The Selected Papers of Wolfgang Köhler
From the introduction: So I would commend these formative writings of Fritz Perls to those who would get a fuller sense of the original ideas of Gestalt therapy, a work in progress, but already a fairly consistent field-relational approach ...