(2001). GSIS income increased by 42% on 1st quarter. Manila Bulletin.
Cita Chicago (17th ed.)"GSIS Income Increased by 42% on 1st Quarter." Manila Bulletin 2001.
Cita MLA (9th ed.)"GSIS Income Increased by 42% on 1st Quarter." Manila Bulletin, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.