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Dyfyniad Arddull ChicagoUniversity of California, Davis. Campus Writing Center. Writing on the Edge. Davis, CA: Writing on the Edge, 1989.
Dyfyniad MLAUniversity of California, Davis. Campus Writing Center. Writing on the Edge. Writing on the Edge, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.