Dyfyniad APA
ebrary, Inc, Gulliford, R., & Upton, G. (1992). Special educational needs. Routledge.
Dyfyniad Arddull Chicago
ebrary, Inc, R. Gulliford, and Graham Upton. Special Educational Needs. London ; New York: Routledge, 1992.
Dyfyniad MLA
ebrary, Inc, et al. Special Educational Needs. Routledge, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.