Roa, E. (2010). Slain botanist heard begging for mercy. Philippine Daily Inquirer.
Chicagoスタイル(17版)引用形式Roa, Elvie. "Slain Botanist Heard Begging for Mercy." Philippine Daily Inquirer 2010.
MLA(9版)引用形式Roa, Elvie. "Slain Botanist Heard Begging for Mercy." Philippine Daily Inquirer, 2010.
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