Philippines (Republic). Government Service Insurance System. Annual report. GSIS.
Citazione stile Chigago Style (17a edizione)Philippines (Republic). Government Service Insurance System. Annual Report. Manila: GSIS.
Citatione MLA (9a ed.)Philippines (Republic). Government Service Insurance System. Annual Report. GSIS.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.