Valderrama, H. A. Financial condition and reporting practices of the GSIS. Philippine Management Review.
Citazione stile Chigago Style (17a edizione)Valderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review .
Citatione MLA (9a ed.)Valderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.