APA (7th ed.) Citation

Olchondra, R. T. DOTC upgrades obsolete, risky MRT signaling system. IN Business. Philippine Daily Inquirer.

Chicago Style (17th ed.) Citation

Olchondra, Riza T. "DOTC Upgrades Obsolete, Risky MRT Signaling System. IN Business." Philippine Daily Inquirer .

MLA (9th ed.) Citation

Olchondra, Riza T. "DOTC Upgrades Obsolete, Risky MRT Signaling System. IN Business." Philippine Daily Inquirer, .

Warning: These citations may not always be 100% accurate.