Dyfyniad APA

(1980). International classification of impairments, disabilities, and Handicaps.

Dyfyniad Arddull Chicago

International Classification of Impairments, Disabilities, and Handicaps. 1980.

Dyfyniad MLA

International Classification of Impairments, Disabilities, and Handicaps. 1980.

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