Sayson, I. C. (2001). Travel industry resorting to big discounts to stay alive. Manila Times.
Chicagoスタイル(17版)引用形式Sayson, Ian C. "Travel Industry Resorting to Big Discounts to Stay Alive." Manila Times 2001.
MLA(9版)引用形式Sayson, Ian C. "Travel Industry Resorting to Big Discounts to Stay Alive." Manila Times, 2001.
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