Roa, E. (2010). Slain botanist heard begging for mercy. Philippine Daily Inquirer.
芝加哥风格引文Roa, Elvie. "Slain Botanist Heard Begging for Mercy." Philippine Daily Inquirer 2010.
MLA引文Roa, Elvie. "Slain Botanist Heard Begging for Mercy." Philippine Daily Inquirer, 2010.
警告：这些引文格式不一定是100％准确.