Cagahastian, D. C. (2015). Erap shows mettle as economic manager. Philippine Graphic.
Chicago-viite (17. p.)Cagahastian, Diego C. "Erap Shows Mettle as Economic Manager." Philippine Graphic 2015.
MLA-viite (9. p.)Cagahastian, Diego C. "Erap Shows Mettle as Economic Manager." Philippine Graphic, 2015.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.