Estrada, E. (2001). Metro Manila anti-crime program proposed. Manila Times.
芝加哥风格引文Estrada, Eric. "Metro Manila Anti-crime Program Proposed." Manila Times 2001.
MLA引文Estrada, Eric. "Metro Manila Anti-crime Program Proposed." Manila Times, 2001.
警告：这些引文格式不一定是100％准确.