Dyfyniad APA

Anderson, R. M., & Greer, J. G. (1976). Educating the severely and profoundly retarded. University Park Press.

Dyfyniad Arddull Chicago

Anderson, Robert M., and John G. Greer. Educating the Severely and Profoundly Retarded. London: University Park Press, 1976.

Dyfyniad MLA

Anderson, Robert M., and John G. Greer. Educating the Severely and Profoundly Retarded. University Park Press, 1976.

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