Lopez, E. H. (2007). Graham Ridgway, CEO, Touchpaper. IN Pro-files [column]. Manila Bulletin.
Cita Chicago (17th ed.)Lopez, Edu H. "Graham Ridgway, CEO, Touchpaper. IN Pro-files [column]." Manila Bulletin 2007.
Cita MLA (9th ed.)Lopez, Edu H. "Graham Ridgway, CEO, Touchpaper. IN Pro-files [column]." Manila Bulletin, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.