Roque, R. S. (2011). Reviewer in management advisory services (2011 edition.). GIC Enterprises & Co., Inc.
Lua i Stíl Chicago (17ú heag.)Roque, Rodelio S. Reviewer in Management Advisory Services. 2011 edition. Manila: GIC Enterprises & Co., Inc, 2011.
Lua MLA (9ú heag.)Roque, Rodelio S. Reviewer in Management Advisory Services. 2011 edition. GIC Enterprises & Co., Inc, 2011.
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