Calimag, M. G. (2009). Contractor says GSIS may be at fault for its current IT system woes. Manila Bulletin.
Chicagoスタイル(17版)引用形式Calimag, Melvin G. "Contractor Says GSIS May Be at Fault for Its Current IT System Woes." Manila Bulletin 2009.
MLA(9版)引用形式Calimag, Melvin G. "Contractor Says GSIS May Be at Fault for Its Current IT System Woes." Manila Bulletin, 2009.
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