Cagahastian, D. C. (2015). Erap shows mettle as economic manager. Philippine Graphic.
Chicago-referens (17:e uppl.)Cagahastian, Diego C. "Erap Shows Mettle as Economic Manager." Philippine Graphic 2015.
MLA-referens (9:e uppl.)Cagahastian, Diego C. "Erap Shows Mettle as Economic Manager." Philippine Graphic, 2015.
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