Dickerson, M. U. (1981). Social work practice with the mentally retarded. Free Press.
Dyfyniad Arddull ChicagoDickerson, Martha Ufford. Social Work Practice with the Mentally Retarded. New York: Free Press, 1981.
Dyfyniad MLADickerson, Martha Ufford. Social Work Practice with the Mentally Retarded. Free Press, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.