APA引文

(1999). World population hits 6 billion today. Philippine Daily Inquirer.

芝加哥风格引文

"World Population Hits 6 Billion Today." Philippine Daily Inquirer 1999.

MLA引文

"World Population Hits 6 Billion Today." Philippine Daily Inquirer, 1999.

警告：这些引文格式不一定是100％准确.