Pasayco, S. S. (2001). GSIS reinsurance monopoly: Profile of a favored broker. Philippine Star.
Cita Chicago (17th ed.)Pasayco, Sheila Samonte. "GSIS Reinsurance Monopoly: Profile of a Favored Broker." Philippine Star 2001.
Cita MLA (9th ed.)Pasayco, Sheila Samonte. "GSIS Reinsurance Monopoly: Profile of a Favored Broker." Philippine Star, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.