Wilkins, P. (2003). Person-centred therapy in focus. SAGE.
Lua i Stíl Chicago (17ú heag.)Wilkins, Paul. Person-centred Therapy in Focus. London ; Thousand Oaks, Calif.: SAGE, 2003.
Lua MLA (9ú heag.)Wilkins, Paul. Person-centred Therapy in Focus. SAGE, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.