Villaviray, J. (2002). PPA based on capital investment says Viray. Manila Times.
Chicago Style (17th ed.) CitationVillaviray, Johnna. "PPA Based on Capital Investment Says Viray." Manila Times 2002.
MLA引文Villaviray, Johnna. "PPA Based on Capital Investment Says Viray." Manila Times, 2002.
警告:這些引文格式不一定是100%准確.