Domingo, R. W. Petron returns to black on improved oil prices, market sentiment. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDomingo, Ronnel W. "Petron Returns to Black on Improved Oil Prices, Market Sentiment." Philippine Daily Inquirer .
एमएलए (9वां संस्करण) प्रशस्ति पत्रDomingo, Ronnel W. "Petron Returns to Black on Improved Oil Prices, Market Sentiment." Philippine Daily Inquirer, .
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