Philippines & Philippines. Government Service Insurance System. (1997). GSIS Act of 1997 (RA 8291): Implementing rules and regulations. [GSIS].
Cita Chicago (17th ed.)Philippines i Philippines. Government Service Insurance System. GSIS Act of 1997 (RA 8291): Implementing Rules and Regulations. [Quezon City]: [GSIS], 1997.
Cita MLA (9th ed.)Philippines i Philippines. Government Service Insurance System. GSIS Act of 1997 (RA 8291): Implementing Rules and Regulations. [GSIS], 1997.
Atenció: Aquestes cites poden no estar 100% correctes.