Dyfyniad APA

Repp, A. C. (1983). Teaching the mentally retarded.

Dyfyniad Arddull Chicago

Repp, Alan C. Teaching the Mentally Retarded. New Jersey, Prentice Hall Inc, 1983.

Dyfyniad MLA

Repp, Alan C. Teaching the Mentally Retarded. 1983.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.