Villanueva, M. A. (2002). Arroyo: RP still a weak republic. Philippine Star.
芝加哥风格引文Villanueva, Marichu A. "Arroyo: RP Still a Weak Republic." Philippine Star 2002.
MLA引文Villanueva, Marichu A. "Arroyo: RP Still a Weak Republic." Philippine Star, 2002.
警告：这些引文格式不一定是100％准确.