Richtel, M. As gadgets take over, focus falters. Manila bulletin.
Cita Chicago (17th ed.)Richtel, Matt. "As Gadgets Take over, Focus Falters." Manila Bulletin .
Cita MLA (9th ed.)Richtel, Matt. "As Gadgets Take over, Focus Falters." Manila Bulletin, .
Atenció: Aquestes cites poden no estar 100% correctes.