(1997). Implementing rules and regulations of the Government Service Insurance System Act of 1997. Philippine Star.
Citazione stile Chigago Style (17a edizione)"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Philippine Star 1997.
Citatione MLA (9a ed.)"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Philippine Star, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.