Calica, A. (2010). Poll: Noynoy maintains 15-16% lead over Erap. Philippine Star.
Dyfyniad Arddull ChicagoCalica, Aurea. "Poll: Noynoy Maintains 15-16% Lead over Erap." Philippine Star 2010.
Dyfyniad MLACalica, Aurea. "Poll: Noynoy Maintains 15-16% Lead over Erap." Philippine Star, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.