APA (7th ed.) Citation

(2006). Oil firms raise prices yet again by 50¢ liter. Philippine Daily Inquirer.

Chicago Style (17th ed.) Citation

"Oil Firms Raise Prices yet Again by 50¢ Liter." Philippine Daily Inquirer 2006.

MLA (9th ed.) Citation

"Oil Firms Raise Prices yet Again by 50¢ Liter." Philippine Daily Inquirer, 2006.

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