(2008). Government Service Insurance System 2008 annual report: Beyond numbers. Government Service Insurance System.
Chicagoスタイル(17版)引用形式Government Service Insurance System 2008 Annual Report: Beyond Numbers. Pasay City: Government Service Insurance System, 2008.
MLA(9版)引用形式Government Service Insurance System 2008 Annual Report: Beyond Numbers. Government Service Insurance System, 2008.
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