Villanueva, M. A. (2004). Purisima named GMA's economic spkesman. Philippine Star.
Chicago Style (17. basım) AtıfVillanueva, Marichu A. "Purisima Named GMA's Economic Spkesman." Philippine Star 2004.
MLA (9th ed.) AtıfVillanueva, Marichu A. "Purisima Named GMA's Economic Spkesman." Philippine Star, 2004.
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