Villanueva, M. A. (2003). Without legislation, gov't has no choice but to enforce Clean Air Act. Philippine Star.
Chicago Style (17. basım) AtıfVillanueva, Marichu A. "Without Legislation, Gov't Has No Choice but to Enforce Clean Air Act." Philippine Star 2003.
MLA (9th ed.) AtıfVillanueva, Marichu A. "Without Legislation, Gov't Has No Choice but to Enforce Clean Air Act." Philippine Star, 2003.
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