Valencia, L. R. (2001). Tough days ahead for RP airline industry. Manila Times.
Chicagoスタイル(17版)引用形式Valencia, Lynda R. "Tough Days Ahead for RP Airline Industry." Manila Times 2001.
MLA(9版)引用形式Valencia, Lynda R. "Tough Days Ahead for RP Airline Industry." Manila Times, 2001.
警告: この引用は必ずしも正確ではありません.