Dyfyniad APA

Ashman, A. F., & Laura, R. S. (1985). The education and training of the mentally retarded: Recent advances. Croom Helm.

Dyfyniad Arddull Chicago

Ashman, A. F., and R. S. Laura. The Education and Training of the Mentally Retarded: Recent Advances. London: Croom Helm, 1985.

Dyfyniad MLA

Ashman, A. F., and R. S. Laura. The Education and Training of the Mentally Retarded: Recent Advances. Croom Helm, 1985.

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