Philippines. Government Service Insurance System. (1965). GSIS handbook of information on retirement insurance. GSIS.
Chicago-Zitierstil (17. Ausg.)Philippines. Government Service Insurance System. GSIS Handbook of Information on Retirement Insurance. Manila: GSIS, 1965.
MLA-Zitierstil (9. Ausg.)Philippines. Government Service Insurance System. GSIS Handbook of Information on Retirement Insurance. GSIS, 1965.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.