Chanco, B. (2001). Telecoms clearning house not needed. IN Demand and supply [column]. Philippine Star.
Chicago (17e ed.) BronvermeldingChanco, Boo. "Telecoms Clearning House Not Needed. IN Demand and Supply [column]." Philippine Star 2001.
MLA (9e ed.) BronvermeldingChanco, Boo. "Telecoms Clearning House Not Needed. IN Demand and Supply [column]." Philippine Star, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.