(2001). Promoting call 117 as the country's efficient emergency dial system. Philippine Star.
Cita Chicago (17th ed.)"Promoting Call 117 as the Country's Efficient Emergency Dial System." Philippine Star 2001.
Cita MLA (9th ed.)"Promoting Call 117 as the Country's Efficient Emergency Dial System." Philippine Star, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.