(1997). Implementing rules and regulations of the government service insurance system act of 1997. Manila Bulletin.
Chicago Style (17th ed.) Citation"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Manila Bulletin 1997.
MLA引文"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Manila Bulletin, 1997.
警告：這些引文格式不一定是100％准確.