Punay, E. (2011). Ex-VP Guingona files motion to intervene in Vizconde case. Philippine Star.
Cita Chicago (17th ed.)Punay, Eduardo. "Ex-VP Guingona Files Motion to Intervene in Vizconde Case." Philippine Star 2011.
Cita MLA (9th ed.)Punay, Eduardo. "Ex-VP Guingona Files Motion to Intervene in Vizconde Case." Philippine Star, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.