Lua APA (7ú heag.)

Philippines. Government Service Insurance System. (1997). GSIS Act of 1997 (RA 8291): Implementing rules and regulations. GSIS.

Lua i Stíl Chicago (17ú heag.)

Philippines. Government Service Insurance System. GSIS Act of 1997 (RA 8291): Implementing Rules and Regulations. [Quezon City]: GSIS, 1997.

Lua MLA (9ú heag.)

Philippines. Government Service Insurance System. GSIS Act of 1997 (RA 8291): Implementing Rules and Regulations. GSIS, 1997.

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