Tubeza, P. C. (2012). Gov't alerted to US bill's effect on PH's booming BPO. Philippine Daily Inquirer.
Chicago-viite (17. p.)Tubeza, Philip Cesar. "Gov't Alerted to US Bill's Effect on PH's Booming BPO." Philippine Daily Inquirer 2012.
MLA-viite (9. p.)Tubeza, Philip Cesar. "Gov't Alerted to US Bill's Effect on PH's Booming BPO." Philippine Daily Inquirer, 2012.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.