(1997). Implementing rules and regulations of the Government Service Insurance System Act of 1997. Philippine Star.
Chicago (17e ed.) Bronvermelding"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Philippine Star 1997.
MLA (9e ed.) Bronvermelding"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Philippine Star, 1997.
Let op: Deze citaties zijn niet altijd 100% accuraat.