Dickerson, M. U. (1981). Social work practice with the mentally retarded. Free Press.
Lua i Stíl Chicago (17ú heag.)Dickerson, Martha Ufford. Social Work Practice with the Mentally Retarded. New York: Free Press, 1981.
Lua MLA (9ú heag.)Dickerson, Martha Ufford. Social Work Practice with the Mentally Retarded. Free Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.