Valderrama, H. A. Financial condition and reporting practices of the GSIS. Philippine Management Review.
Cita Chicago (17th ed.)Valderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review .
Cita MLA (9th ed.)Valderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review, .
Atenció: Aquestes cites poden no estar 100% correctes.