Repp, A. C. (1983). Teaching the mentally retarded. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Repp, Alan C. Teaching the Mentally Retarded. Englewood Cliffs, N.J.: Prentice-Hall, 1983.
Lua MLA (8ú heag.)Repp, Alan C. Teaching the Mentally Retarded. Prentice-Hall, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.