Philippines(Republic) Government Service Insurance System. (1963). Handbook of information. GSIS.
Chicago Style (17th ed.) CitationPhilippines(Republic) Government Service Insurance System. Handbook of Information. Manila: GSIS, 1963.
MLA (9th ed.) CitationPhilippines(Republic) Government Service Insurance System. Handbook of Information. GSIS, 1963.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.