Herald on Sunday. [s.n.].
Dyfyniad Arddull ChicagoHerald on Sunday. [S.l.]: [s.n.].
Dyfyniad MLAHerald on Sunday. [s.n.].
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
Herald on Sunday. [s.n.].
Dyfyniad Arddull ChicagoHerald on Sunday. [S.l.]: [s.n.].
Dyfyniad MLAHerald on Sunday. [s.n.].