Ducusin, L. (2001). Selected services outsourced to private firms: SSS privatization as begins. Manila Times.
Cita Chicago (17th ed.)Ducusin, LeeAnn. "Selected Services Outsourced to Private Firms: SSS Privatization as Begins." Manila Times 2001.
Cita MLA (9th ed.)Ducusin, LeeAnn. "Selected Services Outsourced to Private Firms: SSS Privatization as Begins." Manila Times, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.