Ginger, S. (2007). Gestalt therapy: The art of contact. Karnac.
Chicago Style (17th ed.) ZitazioaGinger, Serge. Gestalt Therapy: The Art of Contact. London ; New York: Karnac, 2007.
MLA (9th ed.) ZitazioaGinger, Serge. Gestalt Therapy: The Art of Contact. Karnac, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.