Dyfyniad APA

(1980). Topics in language disorders. Aspen Systems Corp..

Dyfyniad Arddull Chicago

Topics in Language Disorders. Rockville, Md.: Aspen Systems Corp., 1980.

Dyfyniad MLA

Topics in Language Disorders. Aspen Systems Corp., 1980.

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