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Dyfyniad Arddull ChicagoCarter, T. Barton. The First Amendment and the Fourth Estate: The Law of Mass Media. 3rd ed. The Foundation Press, 1985.
Dyfyniad MLACarter, T. Barton. The First Amendment and the Fourth Estate: The Law of Mass Media. 3rd ed. 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.