APA-viite (7. p.)

Chanco, B. (2001). Telecoms clearning house not needed. IN Demand and supply [column]. Philippine Star.

Chicago-viite (17. p.)

Chanco, Boo. "Telecoms Clearning House Not Needed. IN Demand and Supply [column]." Philippine Star 2001.

MLA-viite (9. p.)

Chanco, Boo. "Telecoms Clearning House Not Needed. IN Demand and Supply [column]." Philippine Star, 2001.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.