Sayson, I. C. (2001). Travel industry resorting to big discounts to stay alive. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSayson, Ian C. "Travel Industry Resorting to Big Discounts to Stay Alive." Manila Times 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSayson, Ian C. "Travel Industry Resorting to Big Discounts to Stay Alive." Manila Times, 2001.
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