Dyfyniad APA
ebrary, Inc, Gray, B., & Jackson, R. (2002). Advocacy and learning disability. Jessica Kingsley.
Dyfyniad Arddull Chicago
ebrary, Inc, Barry Gray, and Robin Jackson. Advocacy and Learning Disability. London: Jessica Kingsley, 2002.
Dyfyniad MLA
ebrary, Inc, et al. Advocacy and Learning Disability. Jessica Kingsley, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.