Dyfyniad APA

Tredgold, A. F. (1922). Mental deficiency (amentia) (4th ed., rev. and enl.). William Wood.

Dyfyniad Arddull Chicago

Tredgold, Alfred Frank. Mental Deficiency (amentia). 4th ed., rev. and enl. New York: William Wood, 1922.

Dyfyniad MLA

Tredgold, Alfred Frank. Mental Deficiency (amentia). 4th ed., rev. and enl. William Wood, 1922.

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