Παραπομπή σε μορφή APA (7η εκδ.)

Valderrama, H. A. Financial condition and reporting practices of the GSIS. Philippine Management Review.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Valderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review .

Παραπομπή σε μορφή MLA (9th εκδ.)

Valderrama, Helena Agnes. "Financial Condition and Reporting Practices of the GSIS." Philippine Management Review, .