Ducusin, L. A. (2001). Agri chief: Philippine beef, mad cow-free, safe to eat. Manila Times.
芝加哥风格引文Ducusin, Lee Ann. "Agri Chief: Philippine Beef, Mad Cow-free, Safe to Eat." Manila Times 2001.
MLA引文Ducusin, Lee Ann. "Agri Chief: Philippine Beef, Mad Cow-free, Safe to Eat." Manila Times, 2001.
警告：这些引文格式不一定是100％准确.