(1983). The Assessment of psychotherapy outcome / edited by Michael J. Lambert, Edwin R. Christensen, Steven S. DeJulio.
Lua i Stíl Chicago (17ú heag.)The Assessment of Psychotherapy Outcome / Edited by Michael J. Lambert, Edwin R. Christensen, Steven S. DeJulio. 1983.
Lua MLA (9ú heag.)The Assessment of Psychotherapy Outcome / Edited by Michael J. Lambert, Edwin R. Christensen, Steven S. DeJulio. 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.