Casanova, S. B. (2003). Oil companies cut cooking gas prices. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCasanova, Sheryll B. "Oil Companies Cut Cooking Gas Prices." Manila Times 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCasanova, Sheryll B. "Oil Companies Cut Cooking Gas Prices." Manila Times, 2003.
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