Sayson, I. C. (2001). Travel industry resorting to big discounts to stay alive. Manila Times.
Chicago Style (17. basım) AtıfSayson, Ian C. "Travel Industry Resorting to Big Discounts to Stay Alive." Manila Times 2001.
MLA (9th ed.) AtıfSayson, Ian C. "Travel Industry Resorting to Big Discounts to Stay Alive." Manila Times, 2001.
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