Aning, J. (2003). Powell: Ople was a pivotal figure in RP history. Philippine Daily Inquirer.
Chicagoスタイル(17版)引用形式Aning, Jerome. "Powell: Ople Was a Pivotal Figure in RP History." Philippine Daily Inquirer 2003.
MLA(9版)引用形式Aning, Jerome. "Powell: Ople Was a Pivotal Figure in RP History." Philippine Daily Inquirer, 2003.
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