Katigbak, A. F. (2003). GMA honors Yuchengco with Order of Lakandula. Philippine Star.
芝加哥风格引文Katigbak, Antonio F. "GMA Honors Yuchengco with Order of Lakandula." Philippine Star 2003.
MLA引文Katigbak, Antonio F. "GMA Honors Yuchengco with Order of Lakandula." Philippine Star, 2003.
警告：这些引文格式不一定是100％准确.