(1997). Population act of 1997: It is important for the Filipinos? Manila Bulletin.
芝加哥风格引文"Population Act of 1997: It Is Important for the Filipinos?" Manila Bulletin 1997.
MLA引文"Population Act of 1997: It Is Important for the Filipinos?" Manila Bulletin, 1997.
警告：这些引文格式不一定是100％准确.