(1997). Primer on the GSIS Act of 1997 (RA 8291). Government Service Insurance System.
Cita Chicago (17th ed.)Primer on the GSIS Act of 1997 (RA 8291). [Metro Manila]: Government Service Insurance System, 1997.
Cita MLA (9th ed.)Primer on the GSIS Act of 1997 (RA 8291). Government Service Insurance System, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.