Ng, W. (2001). Unstoppable population growth leading case of poverty. Manila Bulletin.
芝加哥风格引文Ng, Willie. "Unstoppable Population Growth Leading Case of Poverty." Manila Bulletin 2001.
MLA引文Ng, Willie. "Unstoppable Population Growth Leading Case of Poverty." Manila Bulletin, 2001.
警告：这些引文格式不一定是100％准确.