Apostol, E. D. (2006). An open letter to Secretary Lapus. Philippine Daily Inquirer.
芝加哥风格引文Apostol, Eugenia D. "An Open Letter to Secretary Lapus." Philippine Daily Inquirer 2006.
MLA引文Apostol, Eugenia D. "An Open Letter to Secretary Lapus." Philippine Daily Inquirer, 2006.
警告：这些引文格式不一定是100％准确.