(1997). Implementing rules and regulations of the government service insurance system act of 1997. Manila Bulletin.
Citação norma Chicago"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Manila Bulletin 1997.
Citação norma MLA"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Manila Bulletin, 1997.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.