Lucas, D. (2006). Cell phone penetration rate seen to peak at 50%. Philippine Daily Inquirer.
芝加哥风格引文Lucas, Daxim. "Cell Phone Penetration Rate Seen to Peak at 50%." Philippine Daily Inquirer 2006.
MLA引文Lucas, Daxim. "Cell Phone Penetration Rate Seen to Peak at 50%." Philippine Daily Inquirer, 2006.
警告：这些引文格式不一定是100％准确.