(1999). GSIS reperts P 17.99 - B income. Manila Bulletin.
Cita Chicago (17th ed.)"GSIS Reperts P 17.99 - B Income." Manila Bulletin 1999.
Cita MLA (9th ed.)"GSIS Reperts P 17.99 - B Income." Manila Bulletin, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.