Guineden, D. (2000). Hostage crisis: The Abu Sayyaf standoff. Philippine Graphic.
芝加哥风格引文Guineden, Darra. "Hostage Crisis: The Abu Sayyaf Standoff." Philippine Graphic 2000.
MLA引文Guineden, Darra. "Hostage Crisis: The Abu Sayyaf Standoff." Philippine Graphic, 2000.
警告：这些引文格式不一定是100％准确.