Bayos, K. (2015). PNR is not ready to adopt automated fare collection system. Manila Bulletin.
Cita Chicago (17th ed.)Bayos, Kris. "PNR Is Not Ready to Adopt Automated Fare Collection System." Manila Bulletin 2015.
Cita MLA (9th ed.)Bayos, Kris. "PNR Is Not Ready to Adopt Automated Fare Collection System." Manila Bulletin, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.