David, R. S. (2006). Sociology of crowds. In Piblic lives. Philippine Daily Inquirer.
芝加哥风格引文David, Randolf S. "Sociology of Crowds. In Piblic Lives." Philippine Daily Inquirer 2006.
MLA引文David, Randolf S. "Sociology of Crowds. In Piblic Lives." Philippine Daily Inquirer, 2006.
警告：这些引文格式不一定是100％准确.