Natividad, D. (1999). What will happen beyond 2000? Manila Times.
Chicagoスタイル(17版)引用形式Natividad, Don. "What Will Happen Beyond 2000?" Manila Times 1999.
MLA(9版)引用形式Natividad, Don. "What Will Happen Beyond 2000?" Manila Times, 1999.
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