National Institute for the Psychotherapies & Olsen, P. (1980). Comprehensive psychotherapy. Gordon and Breach.
Citazione stile Chigago Style (17a edizione)National Institute for the Psychotherapies e Paul Olsen. Comprehensive Psychotherapy. New York: Gordon and Breach, 1980.
Citatione MLA (8a ed.)National Institute for the Psychotherapies e Paul Olsen. Comprehensive Psychotherapy. Gordon and Breach, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.