Dyfyniad APA

(1959). Annual conference proceedings, American Library Association.

Dyfyniad Arddull Chicago

Annual Conference Proceedings, American Library Association. 1959.

Dyfyniad MLA

Annual Conference Proceedings, American Library Association. 1959.

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