Villanueva, M. A. (2010). Legarda pushes for return of two-party system. IN Commonsense [column]. Philippine Star.
Chicago Style (17. basım) AtıfVillanueva, Marichu A. "Legarda Pushes for Return of Two-party System. IN Commonsense [column]." Philippine Star 2010.
MLA (9th ed.) AtıfVillanueva, Marichu A. "Legarda Pushes for Return of Two-party System. IN Commonsense [column]." Philippine Star, 2010.
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