Casanova, S. B. (2003). Oil companies cut cooking gas prices. Manila Times.
芝加哥风格引文Casanova, Sheryll B. "Oil Companies Cut Cooking Gas Prices." Manila Times 2003.
MLA引文Casanova, Sheryll B. "Oil Companies Cut Cooking Gas Prices." Manila Times, 2003.
警告：这些引文格式不一定是100％准确.