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Dyfyniad Arddull ChicagoPrimer on the GSIS Act of 1997 (RA 8291). [Metro Manila]: Government Service Insurance System, 1997.
Dyfyniad MLAPrimer on the GSIS Act of 1997 (RA 8291). Government Service Insurance System, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.