Lopez, E. H. (2007). Graham Ridgway, CEO, Touchpaper. IN Pro-files [column]. Manila Bulletin.
Chicagoスタイル(17版)引用形式Lopez, Edu H. "Graham Ridgway, CEO, Touchpaper. IN Pro-files [column]." Manila Bulletin 2007.
MLA(9版)引用形式Lopez, Edu H. "Graham Ridgway, CEO, Touchpaper. IN Pro-files [column]." Manila Bulletin, 2007.
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