Valderrama, H. A. Financial condition and reporting practices of the GSIS. Philippine Management Review.
Chicago (17e ed.) BronvermeldingValderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review .
MLA (9e ed.) BronvermeldingValderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review, .
Let op: Deze citaties zijn niet altijd 100% accuraat.