Chipongian, L. C. (2003). BIR expands paperless tax system registration. Manila Bulletin.
芝加哥风格引文Chipongian, Lee C. "BIR Expands Paperless Tax System Registration." Manila Bulletin 2003.
MLA引文Chipongian, Lee C. "BIR Expands Paperless Tax System Registration." Manila Bulletin, 2003.
警告：这些引文格式不一定是100％准确.