Dyfyniad APA

American Library Association. Office for Intellectual Freedom. (1996). Intellectual freedom manual (5th ed.). American Library Association.

Dyfyniad Arddull Chicago

American Library Association. Office for Intellectual Freedom. Intellectual Freedom Manual. 5th ed. Chicago: American Library Association, 1996.

Dyfyniad MLA

American Library Association. Office for Intellectual Freedom. Intellectual Freedom Manual. 5th ed. American Library Association, 1996.

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