Acquisition and generalization of manual signs with hearing-handicapped mentally retarded persons

Bằng Conaghan, Brian Patrick
Được phát hành 1984

Early communication skills for children with down syndrome : a guide for parents and professionals /

Bằng Kumin, Libby
Được phát hành 2012

Enhancing communication : a guide to communicating with children, aged 5 years & over, who have special needs /

Bằng Godfrey, Debbie
Được phát hành 1998

Improving the communication of people with Down syndrome /

Được phát hành 1999

Speech and language intervention in Down syndrome /

Được phát hành 2003