Lee-Brago, P. (2004). GSIS union members return to work today. Philippine Star.
Cita Chicago (17th ed.)Lee-Brago, Pia. "GSIS Union Members Return to Work Today." Philippine Star 2004.
Cita MLA (9th ed.)Lee-Brago, Pia. "GSIS Union Members Return to Work Today." Philippine Star, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.