Herbert, M. (1993). Psychology for social workers. Macmillan.
Lua i Stíl Chicago (17ú heag.)Herbert, Martin. Psychology for Social Workers. London: Macmillan, 1993.
Lua MLA (9ú heag.)Herbert, Martin. Psychology for Social Workers. Macmillan, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.