(1997). Implementing rules and regulations of the government service insurance system act of 1997. Manila Bulletin.
Čikaški stil citiranja (17. izdanje)"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Manila Bulletin 1997.
MLA način citiranja (9. izdanje)"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Manila Bulletin, 1997.
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