Katigbak, A. F. (2005). UP honors former energy secretary. Philippine Star.
芝加哥风格引文Katigbak, Antonio F. "UP Honors Former Energy Secretary." Philippine Star 2005.
MLA引文Katigbak, Antonio F. "UP Honors Former Energy Secretary." Philippine Star, 2005.
警告：这些引文格式不一定是100％准确.