Perls, F. (1951). Gestalt therapy: Excitement and growth (ed.). Delta.
Chicago Style (17th ed.) CitationPerls, Frederick. Gestalt Therapy: Excitement and Growth. ed. New York: Delta, 1951.
MLA (9th ed.) CitationPerls, Frederick. Gestalt Therapy: Excitement and Growth. ed. Delta, 1951.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.