Contreras, V. (1997). 45,589 litterbugs caught by MMDA. Philippine Daily Inquirer.
芝加哥风格引文Contreras, Voltaire. "45,589 Litterbugs Caught by MMDA." Philippine Daily Inquirer 1997.
MLA引文Contreras, Voltaire. "45,589 Litterbugs Caught by MMDA." Philippine Daily Inquirer, 1997.
警告：这些引文格式不一定是100％准确.