Langit, R. B. (1997). Water from polluted rivers to be recycled for drinking. Manila Times.
芝加哥风格引文Langit, Richel B. "Water from Polluted Rivers to Be Recycled for Drinking." Manila Times 1997.
MLA引文Langit, Richel B. "Water from Polluted Rivers to Be Recycled for Drinking." Manila Times, 1997.
警告：这些引文格式不一定是100％准确.