Abrera Jess. (2012). Worsening air pollution. Philippine Daily Inquirer.
Chicagoスタイル(17版)引用形式Abrera Jess. "Worsening Air Pollution." Philippine Daily Inquirer 2012.
MLA(9版)引用形式Abrera Jess. "Worsening Air Pollution." Philippine Daily Inquirer, 2012.
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