(2001). Promoting call 117 as the country's efficient emergency dial system. Philippine Star.
Chicago (17e ed.) Bronvermelding"Promoting Call 117 as the Country's Efficient Emergency Dial System." Philippine Star 2001.
MLA (9e ed.) Bronvermelding"Promoting Call 117 as the Country's Efficient Emergency Dial System." Philippine Star, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.