Ducusin, L. (2001). Selected services outsourced to private firms: SSS privatization as begins. Manila Times.
Chicago Style (17. basım) AtıfDucusin, LeeAnn. "Selected Services Outsourced to Private Firms: SSS Privatization as Begins." Manila Times 2001.
MLA (9th ed.) AtıfDucusin, LeeAnn. "Selected Services Outsourced to Private Firms: SSS Privatization as Begins." Manila Times, 2001.
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