Williams, J. (1982). COGNITIVE THERAPY FOR DEPRESSION.
Lua i Stíl Chicago (17ú heag.)Williams, J. COGNITIVE THERAPY FOR DEPRESSION. 1982.
Lua MLA (9ú heag.)Williams, J. COGNITIVE THERAPY FOR DEPRESSION. 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.